The guy, Tajima; is your typical salaryman who moved to a new house due work related issues. The girl, Ichinose also decided to move to a new house. The catch? For some sort of mistake they ended up renting the same place, at the same time. Fortunately, they actually are acquaintances (they even work in the same company); so, they decide to keep living in the apartment for the time being--- the only problem being that Ichinose is simply too cute...

(Source: MU)