Quick answer — Tarou Iwashiro worked on Umamusume: Pretty Derby Season 3 (Music Producer), The Heroic Legend of Arslan (Music), Gargantia on the Verdurous Planet (Music) and 5 more anime.
Tarou Iwashiro worked on Umamusume: Pretty Derby Season 3 (Music Producer), The Heroic Legend of Arslan (Music), Gargantia on the Verdurous Planet (Music), The Heroic Legend of Arslan: Dust Storm Dance (Music), Rurouni Kenshin The Movie (Music), Gargantia on the Verdurous Planet OVA (2014) (Music), Gargantia on the Verdurous Planet OVA (Music), Blade & Soul (Music).
