我的租客都是怪物 (Associated Names)

Became a time traveler for the first time, and inherited a fourth-floor apartment in Tokyo. Shiraishi Rin, who originally just wanted to lie down and collect rent, gradually realized that the world was abnormal. "Apartment manager? Isn't it just collecting rent? Isn't that enough? " "Wraiths, cats, zombies, ghosts… so, are there any humans in…