Reiroukan Kenzai Nariya

Reiroukan is a beautiful house that is currently renting rooms to male and female students. Shirai Genta has just moved to Reiroukan, turning over a new leaf in his life. The house is full of other people with strong personalities, such as the nerdy Tokimaru and the careless and uninhibited Mikoto, who frustrates her friend Midori with her messiness. Genta gets embroiled in all sorts of wacky situations. Soon, though, Genta finds that Reiroukan is scheduled to be closed in a year. At least, there is still a year for Genta to build fond memories with the lively inhabitants of the house!
(Source: MangaHelpers)