Invaders of the Rokujouma!?

Kōtarō Satomi decided to live on his own when he started high school, and picked Room 106 of Corona House because it was cheap. Unfortunately, Kōtarō soon finds out that a number of otherworldly and supernatural girls also want his room, each for reasons of their own, and they have no intention of backing down. As a result, Kōtarō and the girls end up forced to live together as they try to settle who actually gets the room.