Rokujouma no Shinryakusha!?

All Koutarou Satomi needs is an affordable room while he attends high school. Room 106 seems perfect, until a ghost, a magical girl, an alien princess, and an underground dweller each turn up with a claim to the same tiny space.

Koutarou will not surrender his bargain home, and none of the newcomers intends to abandon her mission. With their landlady forbidding destructive battles, the struggle becomes a series of contests and uneasy compromises. Protecting a few tatami mats soon means dealing with extraordinary neighbors whose lives are increasingly tangled with his own.