Shou and his friend, Tetsurou, stumble upon a strange orb-like mechanism, the Guyver Unit, in the woods. It physically bonds with Shou and turns him into the alien soldier, Guyver. His mission is to protect the Guyver Unit from the Japanese corporation known as Chronos. They are after it and two other units just like it. To retrieve the object, they send out vicious monsters known as Zoanoids. So no one is safe in Shou's life; not even himself.

The story follows Elk, a bounty hunter in some strange futuristic world. On this world archaic but advanced technology exists side by side with primitive attitudes, beasts and magic. In other words it's got a bit of everything. It also has an evil conspiracy who are able to produce powerful monsters called chimera, who can also appear as human. Naturally it is not long before Elk has rescued a young female beast-master and gained himself some serious enemies. (Source: ANN)

To aid his conquest of Japan, the ruthless lord Daigo Kagemitsu offers to sacrifice his soon-to-be-born son to 48 demons. The demons accept, and the next day, the child is born with several missing limbs and is ruthlessly cast down a river. Fifteen years later, a stubborn young boy named Dororo struggles to survive against hunger and oppressive samurai on the streets of an impoverished and war-torn village. After angering a group of thugs, Dororo is attacked by them, but a mysterious man interrupts them, claiming to hear spirits nearby. Sure enough, a monster emerges from the river, and the man then removes his prosthetic arms, revealing blades hidden underneath, with which he slays the monster before leaving. That night, as the man walks through the forest, Dororo approaches him and declares that he will accompany him. From this, the man, Hyakkimaru, reveals that many of his body parts were stolen by demons and that though he sought a peaceful life, he couldn't escape their relentless onslaught. Despite the tale, Dororo still insists on tagging along. And thus, Hyakkimaru travels through Japan with his new companion and a puppy named Nota, facing the brutality of both hell and mankind.

Millennium Research Institute, a counseling office where bizarre requests come in. The head of the research institute, Ichirou Umoregi, also known as Akuma-kun, a genius boy who only appears once in 10,000 years. However, he doesn't know his real family. So Akuma-kun, along with his partner Mephisto III, pursue the mystery of his origin while challenging mysterious cases in this mysterious detective buddy story. (Source: Fandom)