[HUNTC-660] A daily observation of a schoolgirl whose school swimsuit attendance has become the norm. School swimsuits are now mandatory at a girls' school in a certain town. They ride trains in school swimsuits as usual, attend classes, play a lot, and have sex often.

At this school, the school swimsuit became the school uniform when it was time to switch to summer uniforms. At first, there was some confusion, but once you get used to it, the girls say it's surprisingly easy. Naturally, since it's a substitute for the uniform, you wear the school swimsuit from home and take the train to school. For first-timers, it's a bizarre sight. But for locals, it's just everyday life. However, it's true that the stimulation is quite intense for male teachers. Naturally, there are girls who turn this into a prank, and teachers are constantly tested on their ethics. And even those teachers are just men inside. Mistakes are bound to happen. There's no man who can't be captivated by the many cute girls in school swimsuits! So even if school life turns into a lewd and lewd environment, that's understandable...