Iwashiro has composed the music for many Japanese television series and films. He has composed for both
Red Cliff films,
Shinobi: Heart Under Blade,
Azumi,
The Prince of Tennis,
Rurouni Kenshin: The Motion Picture, and the Korean film
Memories of Murder. He was also lead composer for the
Capcom video game ''
Onimusha 2: Samurai's Destiny. Iwashiro has often led the Tokyo Metropolitan Symphony Orchestra for his soundtracks, including the 2005 taiga drama Yoshitsune
and 2008 film Red Cliff''. He also composed music for two video games: I Will: The Story of London (1993) and the opening song for
Breath of Fire IV (2000). == Filmography ==