GRMO-334 Amateur Guy's Dick Log. Vol. 6: Subaru (20), a self-proclaimed sadist college student with premature ejaculation. - Seika Igarashi

Hasumi's hobby is documenting her sexual encounters with men. She loves turning horny guys into masochists, so she pretends to be an easy woman and takes Subaru, a handsome young man who's showing off at a bar, home with her. She teases, torments, and abuses him with her adult techniques, making him experience the hell of holding back his orgasm multiple times, as he's actually a premature ejaculator, and plays with him by controlling his ejaculation.