Hitomi materializes in Episode 12 as a simulated non-player character within a dreamscape Yuri Nakamura enters after being overwhelmed by shadow creatures. In this fabricated reality, Hitomi poses as Yuri’s classmate and self-proclaimed friend, engaging in routine school interactions. She consistently initiates conversations fixated on romantic speculation, particularly pressuring Yuri about an alleged crush on classmate Fujiwara. These intrusions actively disrupt Yuri’s concentration during lessons, fueling her irritation.

Despite presenting herself as a confidante, Hitomi is ultimately revealed as a pure construct of Yuri’s subconscious. This is demonstrated when Yuri fails to recognize her upon entering the simulated classroom and through Yuri’s retained real-world memories that clash with the illusion. Hitomi exists solely within this deceptive narrative fragment, embodying Yuri’s psychological disorientation and inner conflict. No extended background, character evolution, or appearances in other official media are documented.