Mitsuhiro Hidaka (日高 光啓; Hidaka Mitsuhiro), more commonly known by the moniker SKY-HI, was born on December 12, 1986 in Chiba Prefecture in Japan, and is a rapper, singer-songwriter, dancer, actor, and CEO.

He debuted as the rapper of the co-ed group AAA under Avex Trax when the group debuted in 2005. He was also part of the hip-hop trip Mother Ninjas.

In August 2013, he debuted as a soloist, when he released the single 愛ブルーム / RULE.

In 2021, he founded the label BMSG Tokyo (standing for ‘Be My Self Group’ and ‘Brave, Massive, Survive, Groove’), which houses not only himself, but the idol group he formed — BE:FIRST. The label also houses rappers Novel Core and edhiii boi, singer Aile The Shota and a few trainees.