A Forbidden Time - Season 1

Yuki was assigned to tutor three college students: Ryo, Ri, and Koji. What began as a typical academic session abruptly shifted when the students restrained Yuki with ropes and silenced her with a ball gag. Despite her role as their tutor, she was compelled to surrender her freedom as they subjected her to an invasive examination. The students, expressing a fervent interest in "studying," produced personal toys and used them to tease her body, followed by their own physical attentions. Yuki resisted fiercely, her face flushing with humiliation, but her body gradually succumbed to the unfamiliar sensations imposed upon it.