Kanrai is a rather cheerful man who often jokes, behaves childishly and silly boy. He works as a boss in a building where people with zeno are treated. Zeno is a disease that causes people to become cold-blooded monsters who want to eat human flesh, and the genre in which Kanrai works is looking for a cure for the disease. more precisely, everything except kanrai. Kanrai, on the contrary, wants to infect the whole world with this disease. Kanrai has blue hair and bright red eyes like blood.