Saikyou no Onna Banchou ga Chikubi de Haiboku Shite Cli de Ochiru Hanashi

The strongest female delinquent, Saki Machiyo, is challenged by the school's notorious playgirl, Aru Yarima, to an endurance contest. Aru proposes that Saki will win if she can withstand an hour of sexual teasing without climaxing. After tying Saki up in the equipment room, Aru relentlessly stimulates her breasts and nipples to push the tough delinquent to her limits. Using her fingers and mouth, Aru forces Saki into multiple climaxes, eventually causing her to squirt and urinate. Finally, Aru records the messy aftermath on her phone, threatening to use the video to blackmail Saki into permanent submission.