Age: 16; 17
Birthday: November 11, 1992 (manga), 1994 (anime)
Gender: Male
Blood Type: AB
Height: 171 cm
Weight: 57 kg
Hair: Black
School: Kaimei High School
Class: 2-C; 3-C
Affiliation: Sket Dan
Special Attack: Fujisaki Valencia

The founder and leader of the Sket-dan, nicknamed Bossun (ボッスン). When he puts on his goggles he is able to be in full concentration and saves the day. When talking about his special traits, the sket-dan tends to break the fourth wall, saying how he has nothing unique for a shounen main character. He is an amazing artist and has a bunch of expressions that are easy to read.

He is determined to help his clients and will do it to the best of his abilities. Whenever the sket-dan realizes that Bossun isn't needed he goes into a lazy, depressed state.

Yuusuke's parents both died in separate accidents before he was born.
Yuusuke is Sasuke Tsubaki's twin brother.