Kiyoko, a high school class representative, can’t help but worry about Yano-kun, who comes to school every day covered in injuries for all sorts of reasons. Curious, she and her friends investigate and discover that he’s just a pure and extremely unlucky boy, which prevents him from living a "normal" high school life. Determined to help, Kiyoko gives him her full support. She finds herself attracted to him, but getting closer isn’t easy. Meanwhile, the popular Yudai confesses his feelings to her...