He's the Fighter Unit of Sleepless. Kinka and Ginka together form Sleepless, individuals who do not sleep. They swiftly moved into volume 2 but were defeated by Soubi, forcing them to hand over the envelope containing crucial information to Ritsuka.
They were a decent pair, yet clearly lacked the skills necessary to defeat Soubi. Perhaps in the distant future, they might become as powerful as one-tenth of Soubi's current strength.
(Source: Novellalive)










