High school freshman Yūshi Inaba is forced to look for new place to live after his high school's dormitory burnt down. Having no parents and wanting to live independently from his uncle, he eventually finds a cheap apartment for 25,000 yen called Kotobuki-sō, only to find out that the place has human and supernatural creatures such as ghosts, yōkai, and mononoke living together. There, Yūshi's new daily life begins.