|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.|
|Novel Debut||Date A Bullet|
|Anime Debut||Dead or Bullet|
Isami participated in the Killing Game in Malkuth. She fought against Ayame Takeshita before siding with her to fight against Kurumi Tokisaki and Empty. She was eliminated by Kurumi and later turned into a doll by Doll Master.
Isami looked distinctly athletic. Her messy short hair, sports shorts and blue jersey over a shirt exemplify this considerably. She had reddish-brown hair, and identically colored eyes. It was also stated that her eyes had a dangerous glint to them, hinting at her cheerful attitude towards killing.
A boyish girl, Isami loved to battle. Unlike the other girls who ended up in the Neighboring World, she had little care about her past life. Despite being aware of her long time rival Ayame's hatred towards her, Isami liked her and had a feeling of fondness towards her.
Isami also longed for a friend, however due to the nature of her goal, she noted that any relationship with somebody would likely be torn apart. She thus suppressed this urge with her love for battle, unable to deny how excited it made her. She also appeared to use Ayame as a substitute for a friend as Ayame was one of the only Quasi-Spirits to consistently fight against her, regardless of strength. As a result of this, Isami was single-minded and ruthless, rarely stopping to ponder the repercussions of her actions and refusing to dwell too much on her own thoughts.
- Light Novel
- Date A Live Fragment: Date A Bullet 1
Powers and Abilities
Yinbentabei has enhances Isami's reflexes, which she can proficiently use to deliver spontaneous cutting techniques that normally won't allow the opponent to defend or even escape. When she launches her attack the only thing that could stop it is either a force outside of her range capable of overwhelming her or to not allow Isami to attack from the very beginning.
- (To Empty) "If you don’t fight, a Quasi-Spirit is also unable to survive. Just like us!” 
- (To Ayame Takeshita) "Ahahahahaha! Amazing, Ayame is the best after all! How can I lose to you?!"