Born in the founding family of
Atami City's Hotel Ohnoya, Ohno began playing piano in elementary school. He formed the group Junior Light Music with
clarinetist and future
NHK announcer Isamu Akashi, a classmate at
Keio Senior High School. It was at this time that he taught himself jazz. While enrolled in the Faculty of Law at
Keio University he was a member of the prestigious
big band Keio University Light Music Society. Later in college, on the recommendation of , he joined a quintet with Takeshi Shibuya. ==Career==