
Quick answer — Rui Tsukiyo worked on The World's Finest Assassin Gets Reincarnated in Another World as an Aristocrat (Original Story), Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru 2nd Season (Original Story).
Rui Tsukiyo worked on The World's Finest Assassin Gets Reincarnated in Another World as an Aristocrat (Original Story), Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru 2nd Season (Original Story).