A beautiful young schoolgirl, Shion, has her firm body targeted by school swimsuit enthusiasts! The tight-fitting school swimsuit fabric that envelops her plump body is the greatest treasure for these enthusiasts. A perverted collector secretly films Shion during swimming class. "Her breasts are about to spill out of her swimsuit," says the busty schoolgirl, who becomes an outlet for their sexual desires. The enthusiasts' method is to rape her while she is still wearing her swimsuit, without taking it off... They threaten her with the secretly filmed video, leading to an eternal, brutal gangbang!!!