Ootsuki Hijiri is about to enter his second year of high school–but he’s spending his spring break before school starts moving into a sharehouse with new roommates. His mother is friends with the building’s owner, and their son–“Igarashi”-san–lives there with three other people (four now, with Hijiri). While Hijiri’s mother had assured him that Igarashi was a lovely person who would help out Hijiri with any problems he might have…first impressions suggest otherwise.