Aoi Nishimori’s 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. Sh┼½sei Kugayama moves in next to Aoi’s apartment. Sh┼½sei is a very popular student at their high school. Due to a mistake, Aoi makes the sprinkler go off in his room. Until Sh┼½sei’s room is fixed, he stays with Aoi.
