FSDSS-291 "I won't tell anyone... right?" I succumb to the sweet temptation of a big-breasted female student's swimsuit, having forbidden sex at school. Yukari Mukai

The dream of the swimming club member is to never accept a confession from male students. This is because she's in love with the swimming club advisor. A dream of showing her breasts and crotch to a married teacher, seducing him. After club activities, the teacher finally succumbs to temptation in the pool. Crossing the boundary of a single piece of swimwear… Once crossed, an forbidden after-school relationship unfolds within the school.