[A drama about a superb body in a competitive swimsuit!] Matsunaga, who is the captain of the swimming club and also serves as the student council president, has big breasts that don't match her serious personality, and she is used as masturbation material by the male students. The adolescent boys can't stand Matsunaga's overly bullish attitude! They devour her big breasts that spill out of her swimsuit and rape her! After that, they play with and violate her lewd body as much as they want around the school! Matsunaga's Kokoro and pussy gradually melt, and finally the teacher joins in and they gang-rape her in the classroom! It's her own fault for growing into such a sexy body (lol)