Graphic novel with a hip-hop vibe and black and Japanese characters set in Japan. There are four gangs that rule Tokyo, the focus being on the Wu-Ronz and the Musashino Saru. Kai is part of the Musashino; his ex-best friend Mera runs with the vicious Wu-Ronz. After the slayings of two Musashino members, gang leader Tera wants the group to lay low. Kai, however, wants revenge and knows Mera was involved. Volume 1 ends with the two former friends about to face off.