GAJK-021 A high school girl bound and trained in a warehouse, a pitiful girl kidnapped and imprisoned by an evil group, driven mad by relentless anal training. Rin Hidaka.

A car stopped in front of an old, dilapidated house in the countryside. Out came a group of tough-looking men. They roughly pulled out a unconscious female student from the trunk and took her into the warehouse. After a while, the female student Rin woke up, crying and screaming because she didn't understand the situation, but she was tied up by the men and couldn't move, ultimately being raped. However, the real hell was just beginning. Starting the next day, she underwent relentless anal development, her sanity gradually collapsing…