
Quick answer — Masaharu Koyama worked on Demon Slayer: Kimetsu no Yaiba Entertainment District Arc (Prop Design), Demon Slayer: Kimetsu no Yaiba Infinity Castle (Prop Design), Fate/stay night [Heaven’s Feel] III. spring song (Prop Design) and 4 more anime.


![Fate/stay night [Heaven’s Feel] III. spring song](https://gaku.moe/assets/img/anime/fate-stay-night-heaven-s-feel-iii-spring-song.webp)




Masaharu Koyama worked on Demon Slayer: Kimetsu no Yaiba Entertainment District Arc (Prop Design), Demon Slayer: Kimetsu no Yaiba Infinity Castle (Prop Design), Fate/stay night [Heaven’s Feel] III. spring song (Prop Design), Demon Slayer -Kimetsu no Yaiba- The Movie: Mugen Train (Prop Design), Demon Slayer: Kimetsu no Yaiba Mugen Train Arc (Prop Design), Demon Slayer: Kimetsu no Yaiba Swordsmith Village Arc (Prop Design), Demon Slayer: Kimetsu no Yaiba Hashira Training Arc (Prop Design).