Single mother household with siblings to support—Yuhi desperately needed money. That's when she found a high-paying underground job on social media that accepted students. Thinking it would just involve giving massages in her school uniform, she applied without hesitation. But things took an unexpected turn when a sexually harassing teacher happened to visit the shop. Yuhi was wearing a mask during the session, but suddenly it was ripped off, exposing her identity. Now, with leverage over her—her family situation, her mother, her financial struggles—the teacher blackmails her into performing illegal sexual services at what was supposed to be a legitimate massage parlor. Helpless, she's forced to take a huge cock deep inside her. Torn between survival and shame, she endures, but even as she resists, the intense thrusting makes her orgasm against her will. Used repeatedly at school, at the shop—anywhere, anytime. She becomes the teacher's obedient sex slave. Though guilt gnaws at her for betraying her mother and siblings waiting at home, her body betrays her—her chemistry with the teacher is too strong, the sex too pleasurable, and before she knows it, she's sunk deep into a whirlpool of ecstasy. The innocent, beautiful schoolgirl in uniform has become a willing slut.