ASAI Renji

Kikuno Kei, nicknamed "Kay", is a normal university student and a part-time hitwoman. Web Comic

From Village Idiot: Hideo Kawamura has a really terrifying look, but soft heart. While contemplating suicide, he stumbled upon this computer that contained the virus, "Wiruko", who convinced him to join the "Seimahei", a fighting tournament that has the world as its prize. However, Hideo happens to not have any fighting skills whatsoever, so he has to get through on his wits…

set in the human realm (Tokyo's Shibuya ward) and the bakemono realm ("Juutengai"). In these two worlds which must not intersect, there lives a lonely boy and a lonely bakemono. One day, the boy gets lost in the bakemono world, becomes the disciple of the bakemono Kumatetsu, and is renamed Kyuuta.