He was born on 7 December 1967 in Tokyo, Japan,[1] to a Japanese father, Shigehiko Hasumi, and a Belgian mother, Chantal Van Melkebeke, whose native language was French.[2][3] His father's book Han Nihongo Ron (1977) describes an episode about Shigeomi's life, who grew up to be bilingual when he was a child.
In 1995, he made his debut with the electronic light music unit PACIFIC 231 formed with Takemasa Miyake, and in 1998 released the album MIYASHIRO.[6] Their song "SORA NO KOTOZUTE" was covered by Hei Tanaka in 2017.[7] He was also active in the fields of film music, anime music, and TV ad music.