
Quick answer — Yukihiro Saitou worked on Kotaro Lives Alone (Art Director), Rurouni Kenshin -Kyoto Disturbance- (Art Director), Rurouni Kenshin (2023) (Art Director) and 8 more anime.
Yukihiro Saitou worked on Kotaro Lives Alone (Art Director), Rurouni Kenshin -Kyoto Disturbance- (Art Director), Rurouni Kenshin (2023) (Art Director), Boarding School Juliet (Art Director), Magical Sempai (Art Director), LOVE and LIES (Art Director), LOVE and LIES OVA (Art Director), A Centaur's Life (Art Director) and 3 more.