Chiba was born in Oji, Kita, Tokyo, Japan. He was raised by a single PortugueseJapanese mother along with his younger brother, fellow [[rapper]] known as Lil KOHH. His Korean father, whose Korean surname (고/Koh) became the basis of Chiba's stage name, died by suicide after jumping off an apartment building while high on drugs; his mother struggled with an addiction to [[methamphetamine]]. Chiba grew up around violence and drugs along with his crew of local friends who shared the same experience.<ref name="Numero"/><ref>{{cite web |date=February 28, 2014 |title=団地発！東京のアングラ ヒップホップ – Rising From the Tokyo Projects |trans-title=Coming from the housing complex! Underground hip hop in Tokyo – Rising From the Tokyo Projects |url=https://www.youtube.com/watch?v=Pn36uJvwIvA |publisher=[[Vice Media|VICE Japan]] |language=Japanese |via=YouTube}}</ref>
