Nishizuru Yakki has always considered himself a fairly normal guy. He's graduated from school, works a part-time job, and has never had a girlfriend. Yet he does have one unusual ability - he can see yokai! He usually copes with these ghostly visions by ignoring them - until he meets a mysterious young woman named Rokka. Now, his normal days have taken a notably abnormal turn, as Yakki finds himself the sole defender of a motley array of sexy supernatural beings!