Rokujouma no Shinryakusha!?

Japanese Title: 六畳間の侵略者!?

English Title: Invaders of the Rokujyouma!?

German Title: Angreifer der 6-Tatami-Matten-Wohnung

Plot
Due to young high school freshman Koutarou Satomi's financial circumstances, he is forced to live in a small rokujouma (6-tatami apartment) on a budget of 5000 yen a month. On the plus side, he lives rent-free, but on the minus side, that's because room 106 of Corona Apartments is cursed. Unfortunately, Kōtarō soon discovers that numerous otherworldly and supernatural girls also want his room for various reasons of their own, and aren't about to back down. The ghost is a cute young girl, and hijinks ensue when she tries to drive him out. Between the haunting, Koutarou's nosy neighbors, and a self-styled magical girl flying to the unneeded rescue, there's way too much for the impoverished young man to handle. As a result, Kōtarō and the girls find themselves forced to live together as they try to settle just who ends up with the room.