Ushiro no Hyakutarou

Akira Fudo is just a normal kid in Tokyo, until an old friend of his, Ryo, shows up and turns his world upside down. An upcoming war of demons on humanity is waiting in the wings, however, the only way for a human to fight a demon is with their power. To save the world, Akira and Ryo risk a dangerous ceremony in an attempt to create humanity's only hope: the powerful Devilman.

Among the ruins of an abandoned city, masked children play a mysterious game of hide-and-seek. A young boy joins the game in search of his sister as one by one, the children are hunted by the demonic residents of the urban sprawl.

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?

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.

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.