
Quick answer — Hajime Koumoto worked on MASHLE: MAGIC AND MUSCLES Season 2 (Original Creator), MASHLE: MAGIC AND MUSCLES (Original Creator), MASHLE: Sanma Taisou Shinkakusha Saishuu Shiken-hen (Original Creator).
Hajime Koumoto worked on MASHLE: MAGIC AND MUSCLES Season 2 (Original Creator), MASHLE: MAGIC AND MUSCLES (Original Creator), MASHLE: Sanma Taisou Shinkakusha Saishuu Shiken-hen (Original Creator).