A Forbidden Time: vol. 1
Yuki was responsible for tutoring 3 college students. Ryo, Ri and Koji were regular college students, going to parties, playing their video games. But, the studying suddenly began....These guys tie Yuki with ropes and shut her mouth with a ball gag. In addition, they were so eager to "study", they brought their own "toys" and started teasing her body. Then next came their own...Yuki resisted as her face flushed a bright red. However, her body mercilessly fails under control of them her body discovers these new pleasures.