[Roki] My Sadistic Kouhai Appreciates My Useless Ejaculation

A confident, long‑haired kouhai dominates a shy senpai, turning his nervous closeness into a humiliating, teasing encounter that leaves him throbbing with unwanted arousal. She mocks his helplessness, demanding he watch as she revels in his helpless ejaculation, while his protests dissolve into breathless compliance. The story builds a playful power dynamic, promising a relentless, sadistic amusement that revels in the male's powerless climax.