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Tatsuo Itsuka

Itsuka Tatsuo

Kanji 五河 竜雄
Romaji Itsuka Tatsuo
Status Alive
Gender Male
Species Human
Personal Status
Affiliations Asgard Electronics
Occupation Realizer Mechanic
Novel Debut Volume 11.5

Tatsuo Itsuka (五河 竜雄, Itsuka Tatsuo?) is the father of Kotori and the foster father of Shido.


The patriarch of the Itsuka family, Tatsuo is one of the employees in Asgard Electronics, <Ratatoskr>'s parent company. According to Kotori, he was part of the crew that helped create the Fraxinus and knows about the existence of Spirits, but he doesn't know what they look like until the events of Itsuka Parents.


Tatsuo is described as a person who is always smiling under his dark green glasses and has a distinguishing hunchbacked posture.


Despite being a genius engineer, even his own wife admits that he is a little bit too naïve and would have been scammed numerous times without her help. Despite this, Tatsuo remains a cheerful and upbeat individual, being willing to trust and befriend the Spirits despite their disastrous first encounter.



During his youth, Tatsuo was noted to be friends with Shinji Takamiya. One time, a beautiful girl came to their class to deliver an item Shinji had forgotten, causing a huge uproar among him and his classmates. He eventually got married to Haruko Homura and had a daughter, Kotori.

Tatsuo and Haruko adopted Shido at a very earlier age after the boy was abandoned by his mother. Due to the nature of their work, both he and his wife had to relocate to the United States, leaving Shido in charge of the household chores in their Japanese home and looking after their daughter.


Itsuka Parents[]

One day, Tatsuo and his wife suddenly make a surprise phone call to Shido while he was shopping for dinner ingredients. At first, they start off with a prank call, pretending that someone was kidnapped. However, after their disguise is seen through, they soon inform him without prior warning that they are already at the front entrance of their house. Thinking of the Spirits that are currently there, Shido desperate requests for his parents to not enter the house. But since he was unable to properly explain why, his parents believe that he was merely hiding something naughty and proceed to enter their domicile anyway with the mischievous promise to search through Shido's possessions meticulously.

However, upon entering their house, the couple finds themselves ambushed by the Spirits, who thought that they are burglars. After the initial misunderstanding and some threats of torture from Origami, the Spirits quickly realize that they had accidentally traumatized Shido's foster parents. Afterward, the Spirits plan a Japanese style welcoming for the Itsuka parents, as they fear that if their awful first encounter isn't remedied, the parents would prevent them from seeing Shido again.


  • Light Novel
    • Appearances:
      • Volume 11.5
      • Volume 18 (Flashback)
      • Date A Live Encore 9-11


  • The name Tatsuo contains the kanji for "dragon" (竜, tatsu) and "male" (雄, o).
  • Tatsuo's surname Itsuka contains the kanji for "five" (五, itsu) and "stream" (河, ka).


Shido ItsukaKyouhei KannazukiElliot Baldwin WoodmanKyouji KawagoeMasaomi MikimotoMunechika NakatsugawaTatsuo ItsukaHiroto TonomachiFraser DouglasGillian AlmstedRoland ClaytonJames A. PaddingtonRoger MurdochSimpson
Mana TakamiyaHinako ShiizakiKozue MinowaKaren Nora MathersHaruko ItsukaEllen Mira MathersArtemisia Bell AshcroftJessica BaileyRyouko KusakabeMikie OkamineMildred F. FujimuraCecile O'BrienLeonora SearsAshley SinclairMinerva RiddellTamae OkamineAi YamabukiMai HazakuraMii FujibakamaHiroki TakajoNagisa HimekawaAsahi HoshimiyaKanon AyanokojiSawa YamauchiMatsurika SukarabeAya
Sephira Spirits
Tohka YatogamiYoshino HimekawaKurumi TokisakiKotori ItsukaYamai KazamachiMiku IzayoiNatsumi KyounoOrigami TobiichiNia HonjoMukuro Hoshimiya
Exclusive Spirits
Rinne SonogamiMaria ArusuMarina ArusuRio SonogamiMayuriRen
Other Spirits
Reine MurasameMio TakamiyaTohka Yatogami (Parallel World)
Doll MasterRinemu KirariMizuha BanouinMaya YukishiroAriadne FoxrotHaraka KagarikeOka MiyafujiYuri SagakureKareha BanouinCarte À JouerRetsumi Jugasaki
Other Quasi-Spirits
Hibiki HigoromoTsuanAiai NogiAyame TakeshitaYui SagakureIsami HijikataSheri MusikaFurue TonamiYue HiryuMayuka Momozono
Asgard Electronics
Elliot Baldwin WoodmanKaren Nora MathersTatsuo ItsukaHaruko Itsuka
Round Table
Elliot Baldwin WoodmanKaren Nora MathersFraser DouglasRoland ClaytonGillian Almsted
Fraxinus Bridge Members
Kotori ItsukaReine MurasameKyouhei KannazukiKyouji KawagoeMasaomi MikimotoHinako ShiizakiMunechika NakatsugawaKozue MinowaMana TakamiyaMARIA
Deus Ex Machina Industries
Sir Isaac Ray Pelham WestcottEllen Mira MathersArtemisia Bell AshcroftNibelcole
James A. PaddingtonRoger MurdochSimpson
Elliot Baldwin WoodmanKaren Nora MathersMana TakamiyaOrigami Tobiichi
Jessica BaileyMinerva Riddell • Edgar F. Carroll
Anti Spirit Team
Ryouko KusakabeMikie OkamineMildred F. Fujimura • Tomonara • Kagaya
Kyouhei KannazukiOrigami Tobiichi
Special Sorcery Service
Cecile O'BrienLeonora SearsAshley Sinclair
Artemisia Bell AshcroftMinerva Riddell
Raizen High School
Tamae OkamineReine Murasame • Chousoka Beshiyouichi
Shido ItsukaTohka YatogamiOrigami TobiichiKurumi Tokisaki Kaguya YamaiYuzuru YamaiHiroto TonomachiAi YamabukiMai HazakuraMii Fujibakama