Masami Okui
Sound · Compositor · Theme Song Performance
Born Mar 13, 1968 · Itami, Hyogo, Japan
Active 1994–present
Masami Okui is a Japanese singer and songwriter from Itami, Hyōgo. She began her professional musical career at age 21 as a concert backup singer.
Filmography
Please Put Them On, Takamine-san (2025) — Theme Song PerformanceForticus: Streaming! Inheritors of the Favorite Hero (2026) — Theme Song PerformanceOne-Punch Man (2015) — Theme Song PerformanceYu-Gi-Oh! Duel Monsters (2000) — Theme Song PerformanceRevolutionary Girl Utena (1997) — Theme Song PerformanceSHIROBAKO (2014) — Theme Song PerformanceSlayers (1995) — Theme Song PerformanceGARO (2005) — HikageTekkaman Blade II (1994) — Theme Song PerformanceDi Gi Charat (1999) — Theme Song PerformanceMuv-Luv Alternative (2021) — Theme Song PerformanceCardfight!! Vanguard (2011) — Theme Song PerformanceJAM Project LIVE Shinkan ~Return to the Chaos~ (2004)JAM Project 15th Anniversary Premium LIVE THE STRONGER’S PARTY LIVE (2015)Animelo Summer Live 2008 -Challenge- 8.30 (2009)Animelo Summer Live 2008 -Challenge- 8.31 (2009)JAM Project JAPAN CIRCUIT 2007 ~Break Out~ (2007)A Maiden's Prayer (2006) — Compositor