The morning after watching an AV recommended by a close friend, an unexpected event occurs—his penis is gone, replaced by soft, plump breasts on his chest. Looking in the mirror, he sees the figure of the AV actress he watched the previous day: Azu Amatsuki!? Confused, he touches his new, supple body, feeling an unfamiliar pleasure he never experienced as a man. His heart races as he climaxes through masturbation, overwhelmed by the sensation of a woman's first orgasm—utterly satisfying both mentally and physically. When he visits his friend to talk, he's immediately mistaken: "I'm such a huge fan!" Despite struggling to explain who he really is, his friend, breathing heavily, forcefully attempts to kiss him. Hesitant at first, he soon becomes entranced by the pleasure this new body brings. What follows is five rounds of intense pleasure: creampie sex, handjob and titfuck to ejaculation, aggressive seduction in an erotic school uniform, pounding cowgirl position, and face sitting. This 150-minute journey of having breasts instead of a penis brings alternating waves of confusion and ecstasy, ultimately fulfilling his desires in unexpected ways.