Yukino Ozawa is a secondary character and close friend of primary character Yoshimi Kurahashi. She has lilac hair and green eyes. Her background prior to the central incident, including details about her family, academic life, or personal history beyond her group connections, remains largely unexplored. Yukino maintained a longstanding friendship with Yoshimi but concealed romantic feelings for her, feelings she consistently suppressed before the supernatural events involving an archaeological mirror.

Trapped in an alternate dimension by the artifact, Yukino experiences a significant behavioral shift as its influence lowers her inhibitions. Her suppressed romantic feelings for Yoshimi surface uncontrollably. This culminates in Yukino initiating a sexual encounter with Yoshimi. Yukino is unaware that Yoshimi is mentally inhabiting Miho Akiyama's body due to ongoing body swaps during this advance. Her actions stem from intense, raw emotional urgency rather than premeditation.

Yoshimi's unexpected acceptance and reciprocation of Yukino's feelings, despite occupying Miho's body, fuels Yukino's eagerness and active participation. This encounter represents the peak of Yukino's character arc.

Following this incident and the resolution of the supernatural crisis, Yukino's character receives no further exploration. Her potential reactions to discovering the body swap circumstances, the restoration of original bodies, or the long-term impact on her friendship with Yoshimi remain unaddressed. She exits the narrative after the crisis is resolved, with no continuation of her personal storyline provided.