Gojo Ren was assigned to take the place of a teacher on leave. She was aiming to be a passionate teacher, but she had a single mistake that even her fiance didn't know about. One day, as she was trying to seriously face her students, a student with a past mistake found out. The student who found out about her past was merciless... Her megaton J-cup breasts were tied up and immobilized. The more she struggled, the harder the hemp rope dug into her flesh, and the more she screamed, the more the students mocked her. Deprived of her freedom, her bulge was roughly massaged, sucked from both sides, she repeatedly climaxed against her will, and in the end she was gang-raped. As she was subjected to the utmost humiliation, her engorged breasts became more sensitive... The female teacher who had been trying hard to face her education was unable to resist and fell into the hands of her students as their sex toy...