Quick answer — Nobuhiro Watsuki worked on Rurouni Kenshin OVA: Trust & Betrayal (Tsuioku-hen) (Original Creator), Rurouni Kenshin (Original Creator), Rurouni Kenshin -Kyoto Disturbance- (Original Creator) and 5 more anime.
Nobuhiro Watsuki worked on Rurouni Kenshin OVA: Trust & Betrayal (Tsuioku-hen) (Original Creator), Rurouni Kenshin (Original Creator), Rurouni Kenshin -Kyoto Disturbance- (Original Creator), Rurouni Kenshin OVA: Reflection (Seiso-hen) (Original Creator), Rurouni Kenshin (2023) (Original Creator), Rurouni Kenshin The Movie (Original Creator), Arms Alchemy (Original Creator), Endride (Original Character Design).
