国立音楽大学
Graduated from Kunitachi College of Music, Department of Music Composition, Ōshima began her activities as a composer and arranger while in college, and has been involved in composing music for movies, commercials, TV programs, anime, ambient music and tunes for classical musicians. She released the first Symphony entitled “Orasho” when she was still in college. Through her masterful manipulation of both orchestras and synthesizers, she has attracted attention from various sectors for creating grandiose, dramatic sounds and beautiful melodies.