Because his only knowledge of the world comes from what he's learned from the internet and TV, his understanding of things is a little off. He was born into the Suou branch family. He's a persevering, hard worker, but he has an especially sharp tongue toward those close to him. He speaks in the Kyoto dialect, and he behaves as if he's more mature than he actually is. He has a sharp, clear voice, and his performances are delicate and beautiful.

Kohaku is a member of Cosmic Production's Crazy:B. Kohaku is also a member of New Dimension's Double Face.