Tetsuro Tanaka begins high school a month late because of an accident. When he is finally able to attend, he is nearly struck by a truck but is rescued by a mysterious girl wearing the same pendant as his school. He discovers that he is the only boy in his class and is immediately disliked by his classmates, with a few exceptions. One of these girls is Yayoi Asuka, whose name Tetsuro recognizes from a girl he knew in childhood. Several other girls are introduced, including Sakuya Kazamatsuri. Yayoi reveals that she possesses superpowers and escorts him to his dorm, which he will share with her, Sakuya, Miyabi Tsukuyomi, Akio Suzuka, Otome Chouno, Hifumi Inokai, and finally his teacher, Kano.