Ryō Kirishima is a male college student who adopts a strikingly beautiful female persona through crossdressing. He possesses blonde hair, blue eyes, and an androgynous figure, enabling him to convincingly pass as a woman, frequently wearing dresses, tights, and accessories like necklaces.

He meets Shizuka Kominami at a college mixer while crossdressed and initiates a relationship, taking her to his apartment. This encounter leads to sexual intimacy where Shizuka initially believes Ryō is female. Ryō's crossdressing stems from dissatisfaction with being valued solely for his appearance as a conventionally attractive male; he adopted the female persona to forge connections based on personality rather than physical traits.

Throughout their relationship, Ryō persistently pursues Shizuka, frequently initiating intimate encounters in public settings such as stores, trains, bathrooms, and Ferris wheels, consistently presenting as female. He justifies these actions as expressions of affection, though the relationship remains complex due to Shizuka's confusion about her feelings and orientation. Ryō maintains a dual identity, occasionally revealing his male appearance to Shizuka while continuing to interact with her primarily crossdressed. His character drives the narrative's central relationship conflict and its exploration of identity.