Aoi lives in an apartment by herself. Shusei moves in next to Aoi's apartment. Shusei is a very popular student. Due to a mistake, Aoi makes the sprinkler go off in his room. Until his room is fixed, he stays with Aoi.

Aoi Nishimori's (Ayame Goriki) parents moved to another city for work, but Aoi didn't want to transfer to a new high school. She stays behind and lives in an apartment by herself. Shusei Kugayama (Kento Yamazaki) moves in next to Aoi's apartment. Shusei is a very popular student at their high school. Due to a mistake, Aoi makes the sprinkler go off in his room. Until Shusei's room is fixed, he stays with Aoi.—AsianWiki