Have you ever lost anything that was so precious to you, that if it were gone you wouldn't know what to do? For Otokawa Natsuru, that item is a keychain. Hearing from Kazama Miori, a fellow student with...

On a stormy night, Isamu witnesses a black phantom ship flying in the sky. He follows a man who has descended from the vessel and ends up at the Terada residence. There he finds four men terrified by a...