Yuki Chiba (千葉雄喜, Chiba Yuki , born April 22, 1990) , formerly known by his stage name KOHH is a Japanese hip hop rapper and singer from Oji, Kita, Tokyo. Chiba began producing and recording music at the age of 18, making various mixtapes until he met producer 318 and began releasing material under the GUNSMITH PRODUCTION label. He saw early underground success in the suburban Japanese scene when he produced Lil KOHH's song "Young Forever". The accompanying music video went viral in Japan.