Satoshi Okonogi

Physically separated from her father and at odds with her distraught mother, a girl must negotiate her own passage to maturity.

High school student Nanami lives in Tokyo, Japan. She waits for Halloween because she enjoys dressing up in costumes with her friends. One day, Nanami’s father tells her about a mysterious serial murder case that takes place year on Halloween. Her father works as the chief editor at an occult magazine. At first, Nanami doesn't care about the serial murders, but frightening incidents keep taking place around her.

Freelancer reporter, Kazuki Uchida, knocks down the creepy monster Yoshie, but during that time Hatakeyama is sacrificed. While chasing after the mystery of Yoshie, Kazuki visits a hospital. She visits a man, based on information left by Hatakeyama. Meanwhile, Hatakeyama’s daughter Saori receives a letter from her father asking her to send the thing that he left for her.