Rokujouma no Shinryakusha!?  

六畳間の侵略者!?

Satomi Koutarou starts living independently in an affordable 5000 yen per month apartment. However, the catch is that the apartment is said to be haunted by an adorable ghost who has caused previous tenants to leave. To his surprise, not only does he have a supernatural presence trying to force him out of his new home, but magical girls and other unique female characters turn his small living space into a battleground.