この学校では、夏服に変わるタイミングでスクール水着が制服になった。最初は戸惑いもあったが、慣れてしまえば意外と楽だと女子たちには好評。当然制服の代用なのでスク水は自宅から着用し電車に乗り登校する。初見の人には異様な光景。だけど地元の人間には当たり前の日常。ただ男性教師にはかなり刺激が強いのは事実。当然それを逆手にとって悪ふざけする女子も存在し、教師たちは倫理観を試される日々。そしてそんな教師たちも中身はただのオス。間違いは当然起こる。かわいい女子の大量のスク水姿に心奪われない男なんて存在しない！だから淫らな学校生活になってしまってもそれは仕方ない…。

At this school, school swimsuits became the uniform when summer clothes were introduced. Initially, there was some confusion, but once the girls got used to it, they found it surprisingly easy and it was well-received. Naturally, since it's a substitute for the uniform, they wear their swimsuits from home and take the train to school. It's a bizarre sight for first-timers, but for locals, it's a normal part of everyday life. However, it's certainly quite stimulating for the male teachers. Of course, some girls take advantage of the situation and play pranks, putting the teachers' ethics to the test every day. And yet, these teachers are just men at heart. Mistakes are bound to happen. There isn't a man who wouldn't be captivated by a large number of cute girls in school swimsuits! So, it's inevitable that school life becomes a bit lewd…