Always dependable and compassionate, Kiyoko Yoshida is appointed president of Class 2-1. On the first day of school, a boy named Yano Tsuyoshi arrives late, covered in cuts and bruises. Due to her kind nature and the fact that Yano is seated next to her, Kiyoko can’t help but worry about him and the source of his injuries. After discreetly following him home one day, she discovers the truth—he’s just incredibly clumsy.
As days pass, Kiyoko finds herself constantly fretting over Yano, both at school and at home, unaware that her concern is slowly turning into something more. Armed with a first aid kit, Kiyoko makes it her mission to tend to Yano’s accident-prone injuries, all while a tender romance begins to bloom between them.