Demon Hunter Makaryūdo

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.

In Karakura Town, unidentifiable spirits begin appearing en mases. While attempting to deal with these strange souls, Ichigo Kurosaki and Rukia Kuchiki meet Senna, a mysterious shinigami who wipes out most of them. Senna refuses to answer any questions, so Ichigo is forced to follow her while Rukia tries to find out what's going on.

When the Spirit World is flooded due to an unusual rainfall which overflows the River Sanzu (aka the River Styx), Lord Koenma senses an extremely powerful enemy. He entrusts Death God Botan, to deliver to Spirit Detective Yusuke, a mysterious item which must be protected from the invading enemy. However, by the time Botan finds Yusuke, she's too weak to explain the situation. Yusuke and his friends are left in the dark about the new enemy, but not for long. Soon it is a battle for Earth between mere Spirit Detectives and the almighty king of the Netherworld.

Akira Fudo, adjusting to his new powers as Devilman, is in for a heap of trouble as his newest enemies sent from the demon world are Jinmen, the sadistic tortoise with his victims' faces on his shell --including Akira's mother-- and Sirene, the demon bird, who has more than a few tricks up her feathery sleeves to keep him and humanity at the brink of extinction.

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.