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Alert1 Spoiler Alert: This article/section contains details about future plot lines described in the light novels, not covered in the anime. Do not proceed unless you want to be spoiled.


Yamai Tempest[]

Kaguya and Yuzuru both appear in this world around the Pacific Ocean. However, their arrival creates a cyclone that pushes them near the shore of Arubi Island, causing a violent storm to occur in that area. After descending on the ground, Kaguya declares to Yuzuru that after a battle record of 25 victories, 25 losses and 49 draws, her magical eye has already predicted her victory, to which Yuzuru mocks Kaguya by saying that there are no examples of Kaguya’s magical eye hitting its prediction. As they prepare to once again clash, their battle is paused by Shido, who yells for them to stop. Seeing Shido’s presence, Kaguya suggests an alternative contest by using a third person to judge. She proposes that their last contest be determined by who can seduce Shido first. Agreeing to these conditions, Yuzuru accepts the challenge and states that she will win because she is the more charming one.

Yamai sisters seducing Shido

Yamai Sisters trying to seduce Shido

As they follow Shido back to the museum, where all the other students are taking shelter, Shido tells them to change out of their Astral Dresses to match the summer uniform from his school. Afterward, Reine creates a cover story from them by telling the rest of the class that they are exchange students who will transfer to school during the next semester, but they decided to join earlier for the trip. As the two continue their antics to seduce Shido, they inform him that there was only once an original Yamai, but that person split into the two of them after traveling into this world multiple times. The personality of the original is gone, so one of them must become the new main personality for Yamai. They will use Shido to decide which one of them is worthy of becoming the new Yamai. Following this, the sisters leave to talk to Reine, who informs them that she can help them win Shido over.

The pair then decide to change the signs for the public bath, tricking Shido into entering the girl’s side. Then, the two continue their antics at trying to seduce him. However, their antics only result in another fight between the two of them, with Yuzuru making fun of Kaguya’s scrawny body, while Kaguya returns the insult by calling Yuzuru overweight. However, the conversation soon ends, as Shido finds Tohka jumping into the bath, After revealing their deception, Shido struggles to escape before Origami and the others start to enter the bath.

After the hot springs, Reine decides to put Kaguya in Tohka’s room and Yuzuru in Origami’s room. As Kaguya eats the Pokey given to her by Ai, Mai, and Mii, she starts a conversation with Tohka, who is impressed by all the difficult words that Kaguya knows. After remembering that Tohka was the girl that Shido was carrying on his back, she inquires to know more about him from Tohka. Meanwhile, Yuzuru also seeks advice from her new roommates on winning over the other gender, to which Origami begins to give a reply. After Shido returns to his room, both Kaguya and Yuzuru sneak in while wearing yukatas. As they continue their seduction tactics, Shido becomes flustered and flees from his room in embarrassment.

Yamai Hi-Five

Yamai Sisters celebrating their victory

During the next day, the group goes to the beach in their swimsuits. They then request Shido to put sunblock on their bodies. Afterwards, Reine arranges for a volleyball game, with Shido, Kaguya, and Yuzuru on one team against Tohka, Origami, and herself. Despite initially losing, they are able to turn the tide as soon as they start cooperating together. After the battle, Kaguya requests to talk to Shido in private. When Shido asks why she talks the way she does, she replies that it is necessary for a Spirit with a super and tragic backstory. Then, tells him that she should choose Yuzuru as the person who lives, citing how Yuzuru was the cuter one. Despite not wanting to disappear, she wants Yuzuru to live on more. Before she leaves, she threatens Shido to blow away the island if he does not choose Yuzuru. A few minutes later, Yuzuru appears before Shido and requests that he choose Kaguya since she has a more charming personality. Similar to her sister, Yuzuru threatens misfortune to Shido’s friends if Kaguya is not chosen.

Raphael Kaguya & Yuzuru

Yamai Sisters using their Angel

Later that night, as Shido is discussing to Tohka about the situation between Kaguya and Yuzuru, both of them overhear the conversation. Angry that the other one is choosing to sacrifice themselves, they both agree that the only way to settle the matter is with a battle. Assuming their Astral Dresses and Angel, both of them take to the sky and start fighting again. However, the fight is interrupted by Shido and Tohka, after the latter used his Sandalphon to split the sky in two. He tells both of them that he can offer a third choice: both of them living together in exchange for their Spirit powers. As the two imagine what it would be like to go the school together, they both start crying, with both saying that they want to live with each other. However, the moment is interrupted by the <Arbatel> ship that had sent an army of <Bandersnatch> units to capture them. However, the two easily counter by combining their Angel together to reveal its true form: <Raphael El Kanaph>. Their true Angel takes the form of a bow, which they use to shoot an arrow that destroys all the <Bandersnatch> units and pierces through the <Arbatel>, destroying the aerial ship in the process.

Afterward, they both descend to the ground and thank Shido for his help. Kaguya and Yuzuru then both kiss him at the same time. However, much to their surprise, their Astral Dresses start to disappear. As Tohka appears, Kaguya tells her that Shido suddenly stripped them of their clothes, and Yuzuru bemoans that she can’t be a bride anymore. The next day, the Yamai sisters appear and declare Shido to be their shared possession. They then join Origami and Tohka in clinging onto Shido.

Miku Lily[]

After being sealed, the Yamai sisters transfer into the class next door to Shido, as their mental states are stable as long as they are together. Later, the Yamai sisters are in school, listening to Ai's conference on the Tenou Festival. They seem to fit quite well in human society, getting along well with each other. Maybe too well, as Shido thought to himself. When Origami fights with Tohka over Shido, Kaguya and Yuzuru join in as well, claiming that Shido is their shared property. This fight causes Tonomachi and the other male students to nominate Shido as the Tenou Festival executive member out of sheer jealousy. During the day of the Festival, Kaguya and Yuzuru, while dressed as maids, spot Shido dressed as Shiori and tease him about his cuteness.

Kaguya & Yuzuru maid

Yamai Sisters offering their aid to Shido

They are later shown attracting people to the Maid Cafe alongside Tohka. Later, when Shido's group is going to perform without having enough members, Kaguya and Yuzuru arrive to help him, saying that they heard what happened from Kotori. They know how to play music from their previous music talent competitions. Kaguya is good with the drums, while Yuzuru knows how to play the bass. As a result, they can fill in for the remaining positions Shido needed for their band to perform.

Moments before they have to perform, the twins and Tohka are not too nervous despite Shido himself feeling anxious. The Yamai sisters even praise Tohka for having to play the tambourine. During their performance, the audio track they prepared for lip-syncing is damaged by the battle occurring outside between the DEM Wizards and Origami. Luckily, Tohka is revealed to have a fantastic singing voice, enough for them to continue their song without much trouble. When the Festival results are announced, Kaguya and Yuzuru say that, since they helped, it was obvious they would win. When Miku gets angry at losing, she decides to summon <Gabriel>, and the Angel's power is enough to brainwash both Kaguya and Yuzuru, forcing them to attack Shido and Tohka.

Miku Truth[]

Kaguya, Yuzuru, and Yoshino are still controlled by Miku, and they offer her drinks and massages to calm her down. Kaguya gets upset when Miku praises Yuzuru's drink, but then Miku apologizes to Kaguya by remarking that she feels like she is in heaven.

Later, when Miku sees Kurumi helping Shido, she gets angry and commands Kaguya and Yuzuru to go with her back to the stage. Once Shido and Kurumi approach Miku, Kaguya and Yuzuru use <Raphael>'s powers to defend Miku. When Kurumi sends Shido towards Miku with a clone, the Yamai sisters are unable to help due to being overrun by the clones. When Shido and Miku get out of Kurumi's shadow, Miku has the Yamai sisters chase after Shido and Kurumi, only to be slowed down by <Zafkiel>'s Second Bullet, <Bet>.

After that, Miku is upset about the things Shido told her, and Kaguya and Yuzuru try to cheer her up by telling her to not think about him. When Miku asks the others what they think about Shido rescuing Tohka, the Yamai twins and Yoshino claim that Shido would even risk his life to save her.

Yamai sisters in the midst of battle

Yamai Sisters amidst the battle

The twins appear once again outside the DEM building when Miku decides to assist Shido in rescuing Tohka. Even though Shido calls out to them, the sisters and Yoshino don't listen to him. While Mana is fighting Jessica, Yoshino, Kaguya and Yuzuru try to fight her, but they just end up saying that she is more powerful than the other Wizards, so they start attacking the AST instead. Soon after, when Origami appears with the SSS CR-Unit, she is surprised to know that Kaguya and Yuzuru are Spirits. Even so, the Yamai sisters threaten to kill Origami if she goes against Miku.

After Miku loses her hold on the Spirits, Kaguya and Yuzuru help Yoshino deal with the attacking Wizards. As the trio is later attacked by Origami, Kaguya uses her powers to strike her down, but Yuzuru goes to help and asks her what is happening. As Origami tells them that Shido is in danger before passing out, Yuzuru then leaves Origami with the other AST members.

When Inverse Tohka attacks Shido, Kaguya and Yuzuru intercept and save him from her attack at the last moment. After saying that this wasn't hard for them to accomplish, the twins throw Shido towards Tohka so that he can save her. Once that incident is over, Shido passes by the Maid Cafe in order to visit Miku, only to get teased by Kaguya and Yuzuru for not being dressed as Shiori.

Natsumi Search[]

The Yamai sisters, along with the other Spirits, see Miku clinging on to Shido. The twins scold Miku for her actions and declare Shido to be their shared property. As Miku apologizes to Yoshino and the twins for what she did, Miku tells the Spirits that she is about to give Shido a goodbye kiss. Miku then says that they should all share that kiss, scaring the other Spirits as they run away from Miku.

After arriving late to school, Shido is confronted by the Yamai sisters, who are wearing their gym clothes. Due to Natsumi’s pranks, the two chase after Shido, while wearing their school swimsuits. They demand that Shido give back the clothes he stole from them, with Yuzuru also wanting revenge for drenching her clothes with water. They proceed to chase after Shido, who runs away confused over what is happening.

DAL v8 07

Yuzuru grabbing Shido's arm

After finding out that Natsumi had transformed into one of his friends, the Spirit told Shido that every day someone would disappear if he could not find her. As a result, Shido begins to have a date with every suspect in each of the photos that Natsumi gave him. The last date during the first day is with Yuzuru. Yuzuru scolds Shido for being late, to which he apologizes. Shido then notices that Kaguya isn’t here, which feels odd since the two are always together. Yuzuru asks if she alone isn’t enough, to which Shido denies, but adds that it was rare to see them apart. Yuzuru tells Shido that she and Kaguya share one mind and body, but she will be the one hogging Shido today. As they go for a walk, Yuzuru asks Shido which one of the twins he likes more. As Shido struggles to give an answer, Yuzuru scolds him for being indecisive. Shido asks her which one she wants to choose. Yuzuru replies that if she chooses Kaguya, she would praise Shido, but she would be both happy and angry if he chooses her. Yuzuru tells Shido that she and Kaguya share likes and dislikes, so Kaguya also cares a great deal for Shido. Feeling that she has said too much, Yuzuru runs away while telling Shido to take care of Kaguya.

The next day, Kaguya runs into Shido’s house, worriedly stating to him that she hasn’t seen Yuzuru since yesterday. In order to calm Kaguya down, <Fraxinus> lies to Kaguya by telling her that Yuzuru has gone for an inspection. For Shido’s date with Kaguya, the two of them go bowling. However, during the date, Kaguya requests a match in which the loser has to fill out one request for the winner. After Kaguya wins, she tells Shido that for the next ten minutes he has to vow that he will not be surprised with what she does, and he must also swear that to never tell anyone what happens during that time. As Shido agrees, Kaguya lies down on Shido’s lap, and starts crying, telling Shido that she knows they can’t find Yuzuru, and begs for Shido to find her sister.

On the last day, Kaguya is among the final suspects. As Natsumi’s mirror appears in front of them, telling her that each one of them will start to disappear every 10 minutes if they can’t figure out who she is. Kotori and Origami suggest that Yuzuru was the imposter, since she was the first person to disappear. Hearing this causes Kaguya to distort her face in displeasure, as she felt that they were accusing her sister of being the culprit. However, declaring Yuzuru as the culprit causes Origami to disappear. Angered by Natsumi’s actions, Kaguya yells for Natsumi to give her sister and friends back. As she tries to punch the mirror, she is easily blown back. Kotori tells Kaguya that her current Reiryoku levels make her unable to do anything to Natsumi. After Kotori hastily declares Tohka to be the suspect, Kaguya is the next person to disappear.

However, after Shido figures out that Natsumi had transformed into Yoshinon, Natsumi’s mirror releases all of her captives, including both Kaguya and Yuzuru. However, angered that Shido had seen her true form for a second time, Natsumi uses her <Haniel> to transform everyone into children before flying away.

Natsumi Change[]

The Yamai twins are among the Spirits that got turned into children by Natsumi. While the other girls are bothering Shido, Kaguya and Yuzuru are trying to steal Kotori's Chupa Chups. When Reine arrives to help Shido, she has Kaguya and Yuzuru apologize to Kotori, claiming that they wouldn't like it if someone else ate their candy. The sisters sleep in Kotori's room afterwards. When Shido goes to school, Tohka, Origami and the Yamai sisters enter the classroom, causing some misunderstandings which cause them to call Shido a "lolicon". When Natsumi causes further trouble for them, they leave the school.

Soon after that, Natsumi uses <Haniel> to turn the Itsuka residence into a zoo, with every girl dressed like an animal (Kaguya being a monkey). Later, they help during Natsumi's fight with Ellen. Once she is wounded by the Wizard, the Spirits transform back to normal. When Shido is trying to convince Natsumi that she can be beautiful without her powers, Kaguya and Yuzuru take care of her hair. They reveal then that Yuzuru won the 71st competition, the shampoo battle, while Kaguya won the 72nd contest, the hair caring contest.

Later on, when the Spirits are deciding Natsumi's clothes, Kaguya suggests a gothic outfit. When Natsumi tries to escape the Ratatoskr underground facility disguised as Kotori, she tries to convince the Yamai twins and Miku that she is ugly and evil, but they remind her about all the things Shido went through to save them.

Afterwards, the Yamai twins help the Spirits trying to destroy the DEM artificial satellite, using their powers of wind to try to delay the descent of the satellite. However, they are attacked by a <Bandersnatch> unit while doing it. Thanks to Natsumi coming to their aid, they only end up with some light injuries. Kaguya and Yuzuru both agree to be Natsumi's friends. When Shido finally seals Natsumi's powers, the Yamai sisters, along with the other Spirits, mock Shido for being so daring.

Tobiichi Angel[]

When Shido meets with Tohka to go to school together, she tells him that Kaguya and Yuzuru went ahead in a competition on who would reach the school first. After Origami kidnaps Shido, Tohka and the Yamai Sisters return to the Spirits mansion, joking about Shido being weak. The twins are the only ones who suspect it's strange for him not to appear this late.

Once they arrive at the mansion, a funny scene ensues when Miku tries to hug the three of them, but they both dodge her. However, while the four girls discuss Shido and Origami's absence, the Spacequake alarm sounds. The girls try to go to the nearest shelter, but they are stopped by Origami. Once she attacks the Spirits with a new CR-Unit, Kaguya and Yuzuru are the first to manifest their limited Astral Dresses and Angel to stop Origami, but she uses her Territory to obstruct the sisters’ movements.

DAL v10 05

Yamai Sisters assuming their Limited Astral Dresses

Miku uses Gabriel to restrain Origami, while Tohka, Kaguya and Yuzuru charge at her with their Angels. However, Origami used a super dense Territory to blow away Gabriel's pipes and paralyze Tohka and the Yamai sisters. Later, Tohka wakes up to find Kaguya collapsed on the floor. Origami holds Yuzuru by the neck and prepares to pierce her stomach with her sword. However, Kaguya gets angry at this and manages to break Origami's CR-Unit with her lance.

Furious at Kaguya, Origami activates her Territory again to overwhelm them, forcing Tohka to be close to inversing again. Just as Origami is about to stab Yuzuru, Tohka manifests her full Astral Dress. After Tohka blows Origami away with Sandalphon, she goes to confirm that Kaguya, Yuzuru, and Miku are safe. When Kaguya sees her Astral Dress, she praises Tohka and asks her to teach her how to manifest it. Yuzuru, however, asks if Origami is okay, to which Tohka replies that she is not dead at the very least. When Tohka checks up on Miku, she imitates the Yamai sisters’ voices to get a kiss from Tohka, but the twins warn her about it and get angry afterwards. When Origami appears in the sky as a Spirit, the four girls are surprised. Kaguya and Yuzuru carry Miku by her shoulders so as to not hinder Tohka. After Shido interrupts Tohka and Origami's fight, all the Spirits, including Kaguya and Yuzuru, are sent to the hospital to treat their wounds.

Yoshino wipes Kaguya's face with a wet cloth, and she acts tough, even though tears begin to form in the corners of her eyes. Yuzuru teases her about that. When Shido asks about Origami, the Yamai twins comment on how she looks powerful. Later, they spy on Shido when he tries to seal Tohka's powers. Afterward, they tease him for feeding Tohka.

When Inverse Origami appears, Kaguya and Yuzuru, along with the other girls, gasp in terror. However, they soon agree to lend their strength so that Shido may approach her. The Yamai twins use their powers to lift Shido up when he decides to face Origami. While flying, the sisters treat Shido like a child, saying that he flies skillfully. When Ellen confronts them, Kaguya charges at her, giving Yuzuru the chance to throw Shido towards Origami, only for him to find that she is beyond salvation now.

Tobiichi Devil[]

Kaguya and Yuzuru first appear in the New Timeline when Shido and Tohka are about to go to school. Kaguya thinks Shido was staring at their chests, to which Yuzuru replies that it's only a natural reflex for males. After Kaguya forgives Shido, Yuzuru teases her about having a diary with indecent delusions of Shido. They both run off to school soon after that. While Shido is on his date with Origami, the Yamai sisters are playing video games at the Spirits’ mansion. Suddenly, they feel something had happened. Soon after, they use their powers to save Fraxinus from Inverse Origami. When Shido states that he wants to save Origami, the Yamai sisters agree to help him from the skies by providing a distraction for Demon King <Satan>’s attacks.

Once Origami is sealed, the twins wait for her to arrive in the classroom. Kaguya still holds a grudge against her for what happened in the Old Timeline. Meanwhile, Yuzuru is just happy that Origami changed her view on Spirits. They retreat to their classroom once they greet Origami good morning.

Itsuka Disaster[]

DAL v12 02

Yamai Sisters teasing Tohka and Shido

As Shido and Tohka make their way to school, Kaguya and Yuzuru show up and tease Shido for holding Tohka’s scarf by comparing it to clutching onto the leash of a dog. The duo then run away to school, with Shido and Tohka in pursuit of them. After arriving at the front entrance, they inform Shido it was just a joke, though Yuzuru also adds that it was because Kaguya was jealous. During the physical examination, the Yamai sisters decide to compete with each other by seeing who can come closest to a set value. Like everyone else, they are stunned when Shido suddenly collapses.

As the Spirits wait in the underground <Ratatoskr> facility to hear Shido’s condition, the Yamai Sisters scold Natsumi for her negative thought process on the grounds that Tohka might believe it. As Reine arrives and explains the situation, she tells everyone that they need to kiss Shido in order to restore the Path to normal. As Tohka asks if everyone else has kissed Shido before, Kaguya asks Tohka how she thought Shido sealed away their powers. However, before this conversation can proceed, Shido has disappeared from his hospital bed.

After finally finding Shido, they are shocked by how he was using everyone’s power, but even more so by his new flirtatious personality. As Kotori gives the Yamai Sisters the command to physically restrain Shido, he easily avoids them by using Natsumi’s powers to transform every present into Shiori. The Yamai Sisters and the others are then issued a challenge by Shido, to make him fall for everyone on a date. Back at the base, both comment on how Shido's personality has changed drastically. It was almost as if he had become a Casanova. Reine remarks that the combination of his cold and the overheating must have caused him to experience a euphoric high of sorts. Reine then arranges a plan where each Spirit would have a 45-minute date with Shido. Additionally, she warns everyone against using their powers, as there is a time limit on usage because the current situation prevents a counter flow of Reiryoku circulating between them and Shido. After the plan is done, they invite Shido to a warehouse where they are all wearing swimsuits. During the Yamai Sisters' date with Shido, they work together to seduce Shido through a combination of their swimsuits and eating ice cream.

During the final battle to save Shido, the Yamai Sisters quickly assume their Limited Astral Dresses, to which Kotori scolds them since they can only use their powers for five minutes, and they can't waste any time using them for a strong bravado. As they glide through the sky, both summon their Angels. Kaguya's lance breaks through the barrier surrounding Shido, allowing Yuzuru to restrict Shido’s movements by using her chains. Immobilizing Shido, both kiss him at the same time, telling him to come back to his senses.

After Shido is saved, the Yamai Sisters are among the group who walk in on Tohka kissing Shido. While Kaguya praises Tohka for being so bold, Yuzuru comments that Kaguya is secretly jealous.

Nia Creation[]

As Shido discusses the situation with Nia to Kotori, Kaguya’s voice can be heard asking Shido to offer a sacrifice of food to her stomach. Then, Yuzuru tells Shido that Kaguya wants to eat some of his delicious food, which causes Kaguya to yell at Yuzuru for twisting her words. After Shido reveals that Kotori used to wet the bed, she lets out a scream from the kitchen. Hearing the loud noise, the sisters ask what happened. However, Kotori quickly changes the topic and tells them that it's about wetting the table. Despite not completely believing it, the two relent and follow Kotori’s orders to set the table for dinner.

After the failure of the visual novel plan, Kotori recruits the other Spirits to help create a plan for winning over Nia. Here, Kaguya voices her surprise that Souji Honjo is actually a woman. When Shido asks Kaguya if she reads manga, Yuzuru responds that Kaguya secretly buys Ecchi manga by inserting it between battle manga and sports manga. Then, Kaguya retaliates by saying that the Shoujo manga that Yuzuru always reads has even more explicit scenes. As Yuzuru asks in what regard, Kaguya embarrassingly struggles to come up with an answer. However, their discussion is stopped by Kotori, who tells them to save it for later.

DAL v13 06

Yuzuru staring at Origami's drawing

After Origami comes up with the plan to draw a manga based on Shido’s past experiences with the other Spirits, Yuzuru states that it’s a good idea, which is to be expected from Master Origami. They tell Shido that they have prior experience drawing manga. During their 39th match, they tied again in their illustration submission showdown. Both of their works got printed together under the title [Rare illustrations from twins!]. However, before they can start, the conversation is interrupted by Nia, who has hacked into <Ratatoskr>’s communications system by using her Angel. The Yamai sisters both comment on how angry Nia looked. After Kotori made the sales challenge to Nia at Comico, all the Spirits started drawing an illustration of Shido to see who would be the main artist.

Kaguya’s drawing depicts Shido in a hot-blooded Shōnen style. Meanwhile, Yuzuru’s drawing illustrates a bishonen Shido drawn in Shōjo style. Both illustrations are drawn very well, so Kotori adds them as candidates for the artist position. As Origami presents her drawing, Kotori shrieks upon seeing the inappropriate content. However, both Yuzuru and Miku intensely stare at the sketched picture. Eventually, it is decided that Natsumi will be the main artist while the Yamai Sisters, Origami, and Shido will be the supporting artists. For the next two days, the Yamai sisters work tirelessly on the doujin.

DAL v13 c03

Yamai Sisters working on the doujin

During the process, the Yamai Sisters help with erasing the pencil traces and inking the image before sending it to be scanned into data. During the work process, the Yamai Sisters insist that Natsumi get some rest; however, the younger Spirit refuses on the grounds of wanting to try her best to help everyone. After finally finishing their work, both sisters collapse in exhaustion. During the sales challenge at Comico, they help sell the doujin by organizing the line. After they tie with Nia in sales, the Yamai Sisters are among the ones overjoyed when Nia says that she will give Shido a second chance.

However, their joy is short-lived, as Nia starts inversing due to Westcott’s actions. Upon Ellen's arrival, the Yamai Sisters and Miku assist Tohka in distracting Ellen. However, after Westcott absorbs Nia’s Qlipha Crystal, their group returns to Shido’s side, having sensed that something went wrong. Like everyone else, they were terrified that Westcott gained the ability to use <Beelzebub>. After Nia recovers from her emergency surgery, Shido takes everyone out to see the first sunrise of the New Year. Like everyone else present, the Yamai Sisters both express their shock when Nia states that every Spirit used to be human.

Mukuro Planet[]

DAL v14 c02

Yamai Sisters praying at the shrine

Three days after the New Year, the Yamai Sisters join Shido, Tohka, and Origami in praying next to the shrine. After finishing, Shido asks them what they wished for. As Kaguya gives off an overly bombastic introduction, Yuzuru quickly retorts that Kaguya wished for wanting to climb up the stairs of adolescence this year. Criticizing her twin for saying that in an overly serious tone, Kaguya states that she obviously wished for a date with Shido. After realizing what she said, the now embarrassed Kaguya starts hitting Yuzuru's back in frustration. After hearing Origami's wish, Kaguya's cheeks flushed with a red color and quickly rushed over to prevent Tohka from hearing it, saying it was too early for the more innocent Spirit. Afterward, the Yamai sisters follow the others in hanging up their own wishing plaques.

Much later, the Yamai sisters and the other Spirits fall down from their hiding spot, revealing that they had all been eavesdropping on Shido's conversation with Mukuro. As Yuzuru struggles to get up, she complains that Kaguya needs to lose weight, much to her twin's agitation for being singled out. After everyone agrees to lend their strength to Shido, Yuzuru questions Reine if there is a way to unlock Mukuro's heart. Reine responds that since Mukuro's <Michael> was responsible for sealing away her emotions, using it again would likely unlock her emotions. Kaguya then boldly declares that she will use force to make Mukuro open her heart again. In return, Yuzuru expresses her doubt, as they have no means to travel to Mukuro's location. Hearing this, Kotori quickly remembers something and decides to take everyone into a secret Ratatoskr base where the new Fraxinus EX is being built. The Yamai sisters and the others are then marveled by the presence of the Fraxinus EX's AI, MARIA, which can now communicate directly with the crew. Then, MARIA informs everyone that Ratatoskr's founder, Elliot Woodman, would like to have a word with them.

After Woodman explains his reasons for leaving DEM and creating Ratatoskr, he introduces everyone to Karen, who had also left DEM with him. Much to everyone's shock, Karen announces that she is Ellen's younger sister. However, the peaceful conversation is interrupted by DEM, who had found their location from <Beelzebub> and begun their attack. As they make their way for the Fraxinus EX, the Yamai sisters and the others accidentally run into Westcott in the process. Despite their best efforts to resist, Westcott uses <Beelzebub>'s ability <Ashufiriya> to transport everyone into a world of fantasy as they are all swallowed into the respective books that emerge beneath their feet.

DAL v14 09

The twins as Hansel and Gretel

In the fantasy world, the Yamai Sisters stumble upon Kotori, as she was slowly starting to freeze to death. In an attempt to wake her up, they pretend that Shido is groping her, causing her to wake up in embarrassment. However, Kotori is still too weak from the cold, so they all decide to warm up using Kotori's matches. However, upon creating a fire, the flames invoke illusory images of food and Shido, much to the twins' shock. Kotori notes that the power of the matches must have to do with her appearance being similar to The Little Match Girl, and briefly summarizes the fairy tale for the Yamai sisters. As their stomachs start to rumble, Kaguya tells Yuzuru to grab the basket that contains cakes and other sugary pastries. As Kotori questions where they obtained such treats, Kaguya explains that they woke up in the middle of a black forest and encountered a house made of candy. Upon hearing their story and seeing the twins' appearance, Kotori summarizes that their story must be based on Hansel and Gretel.

However, Yuzuru notes that they soon fled from the witch that invited them in. After refusing, the witch was enraged and started to chase after them. Yuzuru adds that while running away, Kaguya was crying the entire time, much to the latter's denial. Afterwards, Kotori thanks the twins for saving them. As they question their next course of action, Kotori tells them that their current plan should be to rendezvous with everyone else first before they come up with a strategy to escape from this world. As they are discussing, a merchant passes by and talks about a mermaid, that keeps singing Darling, being brought to the royal palace, raising. After a few minutes of staring at each other with deadpan faces, Yuzuru notes that this mermaid sounds familiar.

The Yamai twins and Kotori are reunited with Shido's group at the main entrance to the palace. They explain to Shido the mermaid situation and how the guard will not let them inside. As they discuss methods of entry, the twins debate either to sneak in or to knock the guard unconscious, which causes the guard to become even angrier. Eventually, Natsumi appears, having her looks transformed by a magician, and easily gains entrance to the palace. Seeing this causes Kaguya to pout, and she questions the guard why Natsumi gets preferential treatment. Nevertheless, Natsumi's transformation dispels at the strike of midnight, and they are once again rejected entry. Eventually, they decide to use Kotori's matches to create illusions of beautiful dresses, which gives them the appearance of nobles and allows them to sneak into the party.

After entering the ballroom, Kotori tells everyone to stay within the reach of the torch's light, as leaving it would dispel the illusion. Despite this, the Yamai sisters charged out of the flame's limited range, causing their beautiful dresses to instantly revert back to the ragged patchy clothing that their representative story characters had worn. The two let out unusual yells of bewilderment and speedily swayed their bodies like trained gymnasts, coordinately leaping backwards into the range of the Kotori's matches. Kotori scolds them for not being careful, to which they apologize and tell her that they will be more cautious.

In the palace, they found Miku as the mermaid entertainment. As conflict is instigated with the palace guards, the twins assume a fighting pose to open a blood path for the others to rescue Miku. However, they are stopped by Origami's timely arrival, who everyone discovers is the king of the castle. Much to the Yamai sisters' shock, Origami did not wear any clothes, since her story was based on The Emperor's New Clothes. After everyone reunites, they start brainstorming again for ideas of how to escape from the fantasy world. However, at that moment, the castle is suddenly invaded by the villains from each of their respective stories. For the twins, the forest witch reappears before them and threatens to devour them whole.

Since they could not use their Angels in the fantasy world, the Yamai sisters and the others are helpless against the ensuing onslaught. Luckily, they are saved by the appearance of a second Shido, whom Natsumi notes must be based on the manga that everyone wrote to impress Nia. After the other Shido manages to defeat all of the villains, he opens a gateway from them with his <Sandalphon>. After returning to their world, they all board the new Fraxinus EX and launch off into space in order to begin the mission to save Mukuro.

Mukuro Family[]

The Yamai Sisters and the other Spirits, with the exception of Origami, Tohka, and Natsumi, decide to stay on the Fraxinus EX in order to help with the battle against Ellen. At first, the twins offer to leave and take care of the other warships that DEM sent along with <Goetia>. However, Kotori asks them to stay on stand by, as the Spirits would be their secret trump card against Ellen. Using the newly installed System Blót within Fraxinus EX, the Yamai Sisters combine their powers with Kotori, Yoshino and Miku to unleash a devastating eruption of energy from the magic cannon that devastates <Goetia>, forcing Ellen to retreat back to Earth. Proclaiming their victory, the twins announce in unison that they are invincible when they are all working together.

The Yamai Sisters are later among the Spirits crowding Shido's hospital bed after he recovered enough from atmospheric reentry. After being startled by Mukuro's sudden arrival via wormhole, the twins comment on her drastic change in personality now that her emotions have been unsealed.

After their memories of Shido were sealed by Mukuro, the twins meet up with the other Spirits at Kotori's house. Yuzuru wins at the video game they were playing, and when it's time for lunch, Kaguya suggests ordering pizza. When the other Spirits start talking about a boy who suddenly talked to them, the twins confirm that they too were interrogated by a boy before homeroom. A few hours later, a Spacequake alarm sounds in the middle of the twins' efforts to find Tohka and Origami, both of which had fled the original gathering of the Spirits. The twins reconvene with Yoshino, Natsumi, Miku and Nia once they see Tohka and Origami fighting each other in the air. Shido appears in front of them, none of them remembering him still, and begs to lend him their powers. Kaguya begins to believe Shido's word about Mukuro, at least to recognize Shido's manners, while Yuzuru only obliges over a presumption that it has happened before.

Kurumi Refrain[]

Kaguya and Yuzuru join the other sealed Spirits with Shido in their discussion about Kurumi's recent challenge. The following day, Kaguya and Yuzuru meet with Tohka and Origami during lunch break and agree to eavesdrop on Kurumi having lunch with Shido at the rooftop. Kurumi briefly acknowledges the other Spirits' presence as she leaves the rooftop.

As part of Shido's training, Kaguya and Yuzuru are aged up by Natsumi in order to play doctor and nurse. Yuzuru makes a snide comment about Kaguya's tone of language even when aged up.

Kaguya and Yuzuru are reverted to their usual appearances for the next stage of training: to make chocolate to give to Shido. When asked, the twins admit they've never challenged each other to chocolate-making. On Valentine's Day, they visit Shido at his classroom to give their chocolates to him. Their chocolates are decorated with gold and silver hues.

A flashback to a successful assassination attempt on Shido reveals that Kaguya and Yuzuru were one of the Spirits that tried to stop Ellen, Artemisia, and the Nibelcole that Ellen summoned. After witnessing Ellen decapitate Shido, they are briefly mentioned to be in their Inverse Forms, causing a hurricane that wrecks havoc before Kurumi resets time.

Kurumi Ragnarok[]

Kaguya and Yuzuru are with the other Spirits as they witness Shido collapse after attempting to access an old memory via <Michael>. The twins are later called up to the emergency conference of the Spirits and Ratatoskr's crew, only for the meeting to be disbanded once it is suspected that the enemy might be eavesdropping on them. Afterwards, the twins retreat to the Itsuka household and play a word game with Nia and Miku. Kaguya is eventually bothered by the silliness of some of the answers she hears, and asks why they are passing time needlessly. Yuzuru notes that Shido had to stay behind at Fraxinus. Eventually, Nia resumes the "game" by having everyone disclose their best moments with Shido. Yuzuru remembers how Shido stopped her and Kaguya from fighting. Kaguya complains, and ends up disclosing a moment with Shido during their bowling date that Yuzuru didn't know about all this time. Kaguya then picks up a call. Hearing Tohka's voice on the other end, she happily accepts a request to help with food preparations.

During the counter-offensive against DEM, Kaguya and Yuzuru assist Tohka in fending off the Nibelcole that were attacking Ratatoskr's ground artillery, manned by their limited pool of Wizards. They quickly command the Wizards to retreat. When the Nibelcole taunt the three Spirits they face, Kaguya diverts their attention to Shido himself.

Mio Game Over[]

Tohka, Kaguya, and Yuzuru quickly move to defend Shido from the recently-awakened Mio. Mio teleports Shido away and informs the three Spirits of her intent to take back their Sephira Crystals, as well as erase Shido's memories to fully restore Shinji. They respond by attempting to attack three-on-one. However, their attempt is foiled by the sudden intrusion of several Nibelcole. Mio summons <Ain Soph Aur> to remove the Nibelcole and other remaining Wizards before refocusing on the three Spirits in front of her. Mio easily dodges the triple-strike of <Halvanhelev>, <El Re'em>, and <El Na'ash> before appearing behind Kaguya and striking her down with a band of light. Yuzuru catches Kaguya but is unable to prevent her demise, leaving her to furiously charge towards Mio despite Tohka's warning. Yuzuru is also stabbed by the light, allowing Mio to confiscate both fragments of their Sephira Crystal, which she combines back into one before reclaiming.

Mio True End[]

In the new timeline, Kaguya and Yuzuru are revealed to have heard about Shido's plan to date Reine, due to Origami wiretapping Shido's conversation with Kotori and broadcasting it to everyone in her room. In the morning, the twins join the other Spirits and Ratatoskr's crew in overseeing Shido's date with Reine, and the two decisions to be made on Shido's behalf. On the first decision, they thought about having Shido compliment Reine's hair, but went for the safer option. On the second decision, they vote for Shido to relax in the private outdoor bath with Reine, citing their own experiences with bathing with Shido. Much later, when the Spirits see Shido kiss Reine, Yuzuru looks on while Kaguya looks away.

The DEM interrupt the date and Shido goes back to Fraxinus. There, Kotori accepts an outside communication line, receiving live feeds of the Spirits' friends at several locations. Kaguya and Yuzuru notice their friends, Eiko Himukai and Ai Kyung respectively, at different locations, and watch in horror as their respective friends find themselves surrounded by Bandersnatch units. Fortunately, Kaguya and Yuzuru are able to travel to their friends' respective locations to rescue them, thanks to Mukuro opening wormholes for the twins via <Michael>. They return to Fraxinus to see that Kurumi had once again saved Shido from an attempt on his life, only for Mio to return having summoned <Ain Soph>.

Despite Shido's attempt to reason with her, Mio still intends to reclaim Shinji. As a result, Kaguya and Yuzuru quickly defend Shido by using <El Re'em> and <El Na'ash> to blow away <Ain Soph>'s roots. After Shido kisses Mio having sealed all ten Spirits, Kaguya and Yuzuru notice him being pulled into <Ain Soph>, and notify the other sealed Spirits of this development. They also notice Kurumi appear to the other Spirits in a new Astral Dress before bringing out <Rasiel> to check Shido's location. When the Fraxinus comes under attack again, this time by a revitalized Westcott attempting to reassert himself as the second Spirit of Origin, the twins contribute their powers twice. Initially, they used <Raphael> to strike Westcott with wind, which turned out to have no effect. After being rejuvenated by Mio's power, the twins use <Raphael> to propel an enlarged <Zadkiel> directly at Westcott.

At the end of the final battle, Kaguya and Yuzuru gather with all the other Spirits, Mana and MARIA, having found Shido at the familiar beach. They then witness Tohka grab the Sephira Crystal left behind by Mio after her passing.

Tohka World[]

One month after the final battle against Westcott, Kaguya and Yuzuru visit the Itsuka house in the morning before school. A few days later, Kaguya and Yuzuru are called up to the Fraxinus for a midnight meeting, along with Shido and the other Spirits apart from Tohka and Kurumi, to discuss Tohka's objective for taking Mio's Sephira Crystal, as Kurumi had discovered through <Rasiel>. They witness Tohka's inverse form gatecrash the meeting and leave. The following morning, Kurumi privately invites each Spirit to meet her at a park, and once Kurumi appears to the Spirits that had gathered, she declares that the Spirits will be battling each other in order to circulate Reiryoku and preserve the world created by "Tohka" for as long as possible. Kaguya and Yuzuru light up with a determination to resolve their own long-standing feud.

Once the battle royale begins, Yuzuru finds Natsumi, the most battle-averse of the Spirits, and goes after her in an attempt to eliminate her early. Kaguya intervenes when it seems that Yuzuru would finish off Natsumi. After Natsumi escapes, the Yamai sisters' clash of winds threaten to engulf the entire park. They exchange respectful words during their clash, having been reminded of how Shido stopped them from fighting and let both of them live. Their clash is suddenly interrupted by clones of MARIA emerging out of <Michael>'s wormholes. While occupied by the MARIA clones, they notice a sign pointing to Nia's location, and furiously rush over there. Nia promptly flees while begging for the MARIA clones to occupy her foes once more. Not long afterwards, the MARIA clones suddenly disappear. Intrigued, Kaguya and Yuzuru choose to find out why, eventually discovering that Nia had been defeated by a different Spirit. As a result, they agree to resume clashing against each other. Their Angels' attacks disarm each other, and eventually they trade a single punch against each other at the same time, each causing the other's Astral Dress to disintegrate. Kaguya and Yuzuru lie on their backs exhausted, content with resolving their battle as a tie, and bump fists. Both are later found by a female Ratatoskr crew member and escorted to the safe part of the park to be given a change of clothes.

After the battle royale concludes, Kaguya and Yuzuru witness Kurumi's brief skirmish against Mana, just before the ground shakes to signify the end of Tenka's artificial world. Kaguya and Yuzuru affirm their belief in Shido just as they and the other Spirits go to find him and Tohka. Once found, Kaguya and Yuzuru begin to cry as they have to say farewell to Tohka, who would disappear together with the artificial world.

Tohka Good End First Half[]

Kaguya and Yuzuru are called to an impromptu Fraxinus meeting along with Natsumi and Yoshino. While waiting for the meeting to start, Kaguya and Yuzuru compete to see who holds an air chair pose for longer. During the meeting, Kotori says she called them over specifically because they were Spirits who did not remember their human pasts. She announces that Ratatoskr has investigated and found information on all of their human pasts, which she hands out as large folders to each attendee.

A month later, after the Spacequake alarm sounds for the first time in almost a year, Kaguya and Yuzuru attend the emergency meeting of the former Spirits and witness Beast enter Fraxinus' meeting room through a wormhole.

Tohka Good End Second Half[]

After bringing their folder to their room at the Spirit Mansion, Kaguya and Yuzuru read about their human past together. The folder verifies that they indeed used to be one person - Yamai Kazamachi, who was born with a vanishing twin. Despite trying to pass it off, both Kaguya and Yuzuru regain their memories as Yamai, secretly worrying what to tell the other about this revelation. At around lunchtime on the same day, both of them independently decide to visit Shido and bump into each other in front of the Itsuka family home. They consult Shido over their worries about whether or not they could be fakes when compared to their original. Using his own experience with inheriting the memories of Shinji Takamiya, Shido remarks that he does not consider himself a replacement for Shinji, but rather he is his own unique person. This gentle reassurance helps alleviate both Kaguya and Yuzuru's concerns.

During the confrontation with Beast, each of the former Spirits descend safely from Fraxinus using their <Yggd Folium> Realizer units and assist Shido, who had initially tackled Beast out of the airship. Kaguya and Yuzuru are assigned to directly confront Beast, though both twins are unable to do so until receiving an <Yggd Ramus> sword each from MARIA. They coordinate a plan of attack with Origami, but Beast roots them to the spot and blows their swords away, defeating them with ease.

After Natsumi successfully lands an <Yggd Ramus> through Beast's back, her swords disappear, only for each one to materialize in front of each former Spirit. Kaguya and Yuzuru watch each other former Spirit regain their Spirit powers first. With both of them at peace with their own origin story, Kaguya and Yuzuru hold hands while grabbing the sword in front of them, and they kiss, fusing into the true eighth Spirit, Yamai Kazamachi. Yamai engages Beast after the other Spirits' continued struggle against their opponent, and her attacks succeed in making Beast retreat. Immediately after Beast's retreat, Yamai de-fuses into Kaguya and Yuzuru again.