Ushiro no Hyakutarou

Among the ruins of the city, there is a game only children can play. It is called “Otokoyo”; a game of hide-and-seek. But whenever children play this game, one by one they would disappear into the blinds of the buildings… The story begins when a boy enters the world of Otokoyo, to find his missing sister.

Akira is just another normal kid in modern-day Tokyo, until an old friend of his, Ryo, shows up and turns his world upside down. Akira learns that there is an upcoming war of demons on humanity and he has just been enlisted for a major tour of duty. But the only way to fight a demon is with their power, so Akira and Ryo risk a dangerous ceremony in an attempt to create humanity's only hope: the powerful Devilman.

Tokyo, Winter. Despite the use of the Youth Ordinance Bill to enforce curfews for minors and regulate the use of the Internet, young people continue to fight for their own freedom through underground methods. One such group calls themselves Surat. They have decided to take on Fumito Nanahara, a man who has great influence on the political world, and basically controls Tokyo with an iron fist. While using the Internet as a weapon to discover more information about Fumito, they learn about "Tower", the secret organization behind Fumito which engages in human experimentation.

A strange virus known as the Demon Virus, attacks the human genetic code, transforming people into monsters with demonic powers. One particular monster is terrorizing the streets of Tokyo. ripping open young women to devour their livers. A famed psychic holds the secret to the identity and purpose of this monster. Now it is up to two molecular biologists. self-proclaimed Bio Hunters Komada and Koshigaya, to reach the psychic and his beautiful daughter before its too late! The Demon Virus is out to conquer the world.

Ten Years ago, Genichiro Izayoi died trying to stop the sorcerer Rebi Ra, and as a result Shinjuku became a playground for demons. And now, the day approaches when Rebi Ra will complete his decade-long ritual to plunge the rest of the world into chaos! As Genichiro's son, it falls to Kyoya to venture into the heart of Shinjuku and put an end to the sorcerer his father couldn't beat. Can Kyoya exceed his father's legacy, or will the demons of Shinjuku create Hell on Earth?

When an artifact known as the "King's Seal" is stolen during transport from Soul Society, Hitsugaya Toushirou is assigned to retrieve it. Toushirou goes missing after a battle with the thieves, leading Seireitei to suspect him of treachery. They order his immediate capture and execution. Unwilling to believe him capable of such a crime, Ichigo, Rangiku, Rukia, and Renji set out to find Toushirou.

An intelligent 15-year-old high school student is unexpectedly transferred to a boarding school where he opens a portal of monsters from another dimension.

As the Overfiend slumbers, the mad emperor Caesar rises to power, enslaving a new race of demon beasts. Into this cruel existence is born the Lord of Chaos, the Overfiend's nemesis. As the blood-thirsty beasts capture the tyrant's daughter in a brutal coup, the Overfiend must awaken to an apocalyptic battle of the Gods.

The "Academy Island Incident" in which four "kings" cross paths... Since then, Silver Clansmen Kuroh Yatogami and Neko have been searching for their master, Shiro. Without finding any clues to Shiro's whereabouts, the two became disheartened. However, one day, they see HOMRA members Rikio Kamamoto and Anna Kushina being chased by someone.

The story starts following an incident: a young girl jumps from the top of a building. The image provokes a certain dread, as the girl appears to have been a corpse even before she jumped. The case is dismissed, yet more and more of these suicides occur, and all from the same building. Thus began the rumour, that a ghost inhabited the rooftop of the building.