Rokujouma no Shinryakusha!? (Invaders of the Rokujyoma!?)
The "apartment comedy" centers around Kōtarō Satomi, a boy who started to live by himself to attend a high school. He fortunately discovered a very cheap, tiny (six-mat or rokujyōma) room for 5,000 yen (about US$50) a month, and began his new life there. However, when he moved into that room "1X6" in the Korona complex, some unexpected "roommates" began appearing one by one: the ghost Sanae Higashihongan, the magical girl Yurika Nijino, the underground dweller Kiriha Kurano and the space alien Theiamillia Gre Fortorthe.
Theia's attendant Ruthkhania "Ruth" Nye Pardomshiha
Kōtarō's bizarre communal life has begun, and "this six-mat room is a battlefield!?"
[Source: Anime News Network]