Quick answer — Sirotaka worked on Mushoku Tensei: Jobless Reincarnation Season 3 (Original Character Design), Mushoku Tensei: Jobless Reincarnation Cour 2 (Original Character Design), Mushoku Tensei: Jobless Reincarnation Season 2 Part 2 (Original Character Design) and 3 more anime.
Sirotaka worked on Mushoku Tensei: Jobless Reincarnation Season 3 (Original Character Design), Mushoku Tensei: Jobless Reincarnation Cour 2 (Original Character Design), Mushoku Tensei: Jobless Reincarnation Season 2 Part 2 (Original Character Design), Mushoku Tensei: Jobless Reincarnation (Original Character Design), Mushoku Tensei: Jobless Reincarnation Season 2 (Original Character Design), Mushoku Tensei: Jobless Reincarnation Cour 2 - Eris the Goblin Slayer (Original Character Design).