As summer approaches, Eita goes to a hospital by the sea to visit Koaki as usual. Koaki, who had always been physically weak, felt guilty about their shallow relationship, but Eita believed that they get on with each other profoundly enough. Then he meets her cousin Kasumi, who has a similar vibe to Koaki, and Yuta's heart is shaken...

A tale of love and lust spun by Minenami Ryou!

夏が近づいてきた頃、泳太はいつも通り小秋の見舞いのため、海沿いの病院へと赴く。昔から体の弱かった小秋は、浅い関係のまま付き合い続けていることに負い目を感じていたが、泳太は十分に深く付き合っていると信じていた。そんな中、小秋とよく似た雰囲気を持つ彼女の従姉妹・夏澄と出会い、泳太の心は揺れて…。峰浪りょうが紡ぐ恋と欲望の物語！！