バタアシＨＡＰＰＹ

The traditional event "Swimming Tournament Full of Men at Eyebrow High School" (there is also a men's contest ☆) will be held. Some students, like Ichiroku and Martha, prepared their swimsuits with a lot of energy, while others were depressed about participating in the tournament and were not good at swimming. The tournament has finally started while various thoughts are mixed! However, unexpected things happened one after another ...

眉難高校の100年以上続く学年対抗の伝統行事『眉難高校　男だらけの水泳大会』（美男子コンテストもあるよ☆）が開催される。一六やマーサのように気合を入れて水着を用意するものもいれば、大会への参加を憂鬱に思う泳ぐのが苦手な生徒もいたりとその印象は千差万別だった。さまざまな想いが交錯する中、いよいよ大会はスタート！　しかし、予想外の事態が次々と発生して……。