"You in a school swimsuit are the best treat for me." Hikari, a transfer student, is targeted by her perverted homeroom teacher who loves school swimsuits so much that he can't help it. She is forced to have sex with him by the pool and filmed. Every day, she is blackmailed and raped in a swimsuit! Seeing her reluctant, the teacher gets even more excited and erect. "Your body really suits a school swimsuit. The marriage of a swimsuit and big breasts is the best." The ultimate compatibility of big breasts and a swimsuit, seen in 4K quality. It's crazy.