OVA
Description
Risa Takabane is classmates with protagonist Yuuki Kagami at Otorinashi Academy. She exhibits pronounced coldness towards male students due to a general dislike of men, demonstrated when she harshly rejects Yuuki's apology after their initial accidental hallway collision. This aversion, stemming from discomfort with male attention, leads her to keep boys at arm's length while displaying markedly different behavior towards female classmates—engaging in openly flirtatious and physically forward conduct, including groping. Her personality blends a refined, ojou-like demeanor with underlying perverse tendencies that surface privately, especially around individuals she perceives as female.

Discovering Yuuki cross-dressing in the girls' dormitory, she exploits the secret to establish a master-slave dynamic, compelling his obedience in exchange for her silence. This arrangement evolves as she demands to become his roommate to supervise her "slave." Despite her initial misandry, she develops genuine romantic feelings for Yuuki, sparking jealousy when other girls interact with him. This creates internal conflict about her sexuality, heightened after a kiss from childhood friend Futaba Sou—whom Risa once believed might be attracted to girls. Risa eventually acknowledges her feelings for Yuuki and competes with other female characters for his affection.

Her character design features dark blue hair, yellow eyes, a height of 1.63 meters, and body measurements of 84-58-84. Throughout the series, she frequently participates in fan service scenes, appearing naked or minimally clothed—such as confronting Yuuki and Ayana wearing only a jacket or entering their room unclothed to interrupt intimate moments. These actions align with her tsundere archetype within the harem dynamic, oscillating between aloofness and fierce protectiveness.

Risa shares a longstanding friendship with Futaba Sou, initially misinterpreting Futaba's affection as purely same-sex attraction. This relationship adds layers to her development, particularly when Futaba's advances prompt Risa to question her own orientation before solidifying her interest in Yuuki. Her interactions extend beyond the main love triangle, demonstrating ambiguous bisexuality through physical advances toward Ayana Kakinozaka and other female characters, though her primary romantic focus remains Yuuki.