A brother and sister learn their biological grandfather was a kamikaze pilot who died during World War II. During their research into his life, they get conflicting accounts from his former comrades about his character and how he joined his squadron.

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.

A magazine publicist investigates an unsolved murder case that occurs on Halloween every year.

Set in the year 2017, the Japanese government attempts to secretly control the DNA of its people. Ryuhei Kagura is a top scientist in the field of DNA analysis. He works at the DNA analysis institution run by the National Police Agency. When the inventor of the DNA analysis system is murdered, Ryuhei Kagura's own DNA is found at the murder scene. Ryuhei Kagura becomes the prime suspect and then he becomes a fugitive. Veteran detective Reiji Asama goes in pursuit.

A brother and sister learn their biological grandfather was a kamikaze pilot who died during World War II. During their research into his life, they get conflicting accounts from his former comrades about his character and how he joined his squadron.

Satoshi, who lives in a wheelchair, accidentally captures the moment his tutor, Haruka, falls while taking pictures of the scenery from the balcony. Meanwhile, Satoshi's father is attracted to the beautiful Haruka and asks her to give lessons to Satoshi with ulterior motives. When Haruka comes to the house, she asks Satoshi to show her the photos from that day, and they begin an intensive private lesson.