Based on the first novel, Spring Snow, of Mishima Yukio's Sea of Fertility tetralogy, it follows the troubled and illicit affair between two youngsters amongst the aristocracy and rich of early twentieth century Japan.

A soldier, swaddled in body armor, guards the border of his country. This is not an area of tension; nothing warlike happens here; all that comes from across the border over in the enemy land are radio waves carrying the speeches of its leader, Marehito played by Hideyo Amamoto (Yojimbo, Kamen Rider). The soldier's only duty is to monitor these speeches, and he is sick to the teeth of the dictator's raving. In his quarters is a female android, a 'comfort woman' issued him by the government. He lives quietly with his green-eyed ILYA Type 6, and is responsible for his desert border area. That is the whole of this soldier's life. One day a military official pays a call on his quarters. There has been a shuffle of personnel in the high echelons, and a slight change in policy has been made. The ILYA Type 6 is to be upgraded.

Junichi, a seasoned sound mixer, was trying to look after his dying wife. Shaken by her illness, Junichi goes out to where he and his wife had traveled to 30 years ago. In a different place, Chika and Yukko visit Yukari's home for her birthday. An exciting time for the girls alone in the house. But their friendship begins to crack when an unexpected guest arrives. Two different stories collide in an unexpected way traveling between past and present, imagination and reality.

A school was built on one of the Gates of Hell, behind which hordes of demons await the moment they will be free to roam the Earth. Hiruko is a goblin sent to Earth on a reconnaissance mission. He beheads students in order to assemble their heads on the demons' spider-like bodies. Hieda, an archaeology professor, and Masao, a haunted student, investigate the gory deaths.

Nozomi Kuroda is in the 2nd grade of high school. One day, she finds a letter in a classroom desk. The letter has only the word "like" written on it. The person who wrote the letter is Jun Setoyama. He happens to be the most popular boy at the high school. Nozomi Kuroda feels embarrassed, but she eventually leaves a reply in a shoe closet at school. This is how their secret exchange diary begins. Nozomi Kuroda soon learns that the intended recipient for the first letter was her best friend. Nevertheless, Nozomi Kuroda is attracted to Jun Setoyama, who expresses his thoughts and feelings unlike her. She's unable to tell him the truth that the person exchanging messages is her and not her best friend.

A fierce battle unfolds between a vigilante who exacts justice on unjust criminals and the police who pursue him. The story then leads to a shocking conclusion... This story will make you ask yourself, "What is justice?"