One day, high school student Yamato Tsukishiro meets Tomoaki Uchida, who is coughing violently in the infirmary. Uchida has had asthma since childhood, and unlike his delicate appearance, he is good at swimming and has a straight personality. He has always had secret feelings for his doctor Makimura. Tsukishiro's heart is shaken by Uchida's single-minded thoughts about Makimura-sensei, and before he knows it, he wants to know Uchida, which no one knows. .. .. A fresh story depicting a long unrequited love that began with a broken heart with a delicate touch.