The Night Beyond the Tricornered Window

Mikado Kousuke, a young man working at a bookshop who seems normal at first glance is actually the owner of a peculiar ability to see eerie things. One day, Hiyakawa Rihito appears in the shop where Mikado works. Hiyakawa declares that it must be destiny as the job he has come to do is none other than an exorcism! When Hiyakawa discovers that Mikado can see spirits, he forces Mikado to help with the exorcism. He then requests that Mikado continue to work with him, but...