Walken is the last surviving member of the Skrum tribe of American Indians and is also known as the most powerful psychic on earth. The blood markings denotes that he won respect and honor, and a totem of death to his enemies.

A secret organization called "Doress" has funded the development of a genetically engineered parasite code-named "BAOH." Organisms infected by BAOH become living survival machines, virtually indestructible, able to mutate their body structure to meet any threat. Properly controlled, the BAOH parasite could allow Doress to control the World. 
 
Unfortunately, their first human guinea-pig, a young man named Hashizawa Ikuroo, has managed to escape, along with a young girl, Sumire, who has a strange precognitive gift. Unless Doress operatives can find and destroy Ikuroo before the BAOH parasite fully manifests, their evil dream will come to naught. 
 
But BAOH, comfortably hiding in Ikuroo's brain, won't make it easy. 
 
(Source: AnimEigo)

[Wiki (jp)](https://ja.wikipedia.org/wiki/屋良有作)

Ikurou Hashizawa was a normal boy until he is captured by evil scientists who create the ultimate fighter by attaching a parasite, named Baoh, to his brain. The mysterious girl Sumire, who has psychic powers, frees him and together they work to avoiding being captured by those who want to use their powers.