Kine is a former executive of the Awakusu Yakuza group. Kine is simply an alias and his given name is unknown. He is described as being bald and usually wears sunglasses and a black business suit. He is also a heavy smoker.
Kine is the one who first introduced Izaya Orihara to the Awakusu and is the person who jumpstarted Izaya'a career as an information broker. He first met Izaya while driving by Raira academy. His car is suddenly stopped when he gets caught in the middle of one of Izaya's and Shizuo's fights. Somehow, he manages to break it up and resolve the conflict peacefully (at least until it started up again the next day). At some point after that incident, Izaya eventually won Kine's favor and he introduced him to the Awakusu which effectively made them one of Izaya's first customers. From then on, Kine was the person who would work out dealings with Izaya when they Awakusu had work for him. After Kine's departure, this responsibility is handed down to Shiki .
The details and reasons behind Kine leaving the Awakusu, or if he was fired, are unclear. In volume 08 of the light novels, Kine is one of the people Izaya calls together to form an alliance with.
He joins Izaya's allince.
Dragon Zombie ArcEdit
He helps take over the gang Zombie Dragon.
Kadota's Coma ArcEdit
In a conversation between Kazamoto and Shiki, Shiki tells Kazemoto not to bring up Kinnosuke Yumeji's name so lightly, as he was the one who caused Kine to be kicked out of the organization.
Saving Izaya/ Haruna is back ArcEdit
He surrounds Slon with Mikage and a couple of Dragon Zombie members. He manages to dodge Slon's attacks and got Izaya out of Slon's reach.