The anime is based on Kazuo Hara's comedy manga in which mascot characters live and work among humans. Agencies have been set up to train mascots to babysit children and then to place the mascots within families. Noramimi is one such mascot at the Hello Kids branch office #59. Unfortunately, no family wants to adopt a mascot born from a demon (oni) family, so he is stuck living at the agency.<br><br>
(Sources: Anime News Network, Moon Phase)

In the world of Noramimi, families frequently have "mascots." Funny characters that live with the family and acts as companions to the children until they grow older. Noramimi is one such mascot. Unfortunately for him, he's of an ogre (well everyone else thinks he's a monk) type and not popular, so he's doing his "home stay" with Hello Kids, an agency that sets up mascots with families. He really wishes a family would adopt him though...<br><br>
(Source: MangaScreener)

Dottari Kun