In the spring of his first year of high school, Takase Michiru decided that he wouldn't put any effort into his school life. However, the student sitting next to him was Hakanagi Kasumi, a girl surrounded by suspicious rumors. With her eyepatch and bandages, she looked like a typical menhera, so Michiru tried to keep his distance. But due to an unexpected incident, the two end up forming a relationship where they support and make up for each other. Frail, yet earnestly doing her best.