Mone Kamishiraishi plays heroine Aoi Nishimori in the film, while Yōsuke Sugino plays Shūsei Kugayama.
New to the story is Reien Kugayama, Shūsei’s cousin, played by Ryūsei Yokohama.
To add to this, a series of crazy happenings result in the two living together under a single roof!
Aoi Nishimori is a high school girl who lives alone in her own apartment, but to her surprise, she discovers that the prince of her school, Shusei Kugayama, has moved in next door!