Quick answer — Kazuhiro Furuhashi worked on Rurouni Kenshin OVA: Trust & Betrayal (Tsuioku-hen) (Director), Hunter x Hunter (Director), SPY x FAMILY (Director) and 14 more anime.
Kazuhiro Furuhashi worked on Rurouni Kenshin OVA: Trust & Betrayal (Tsuioku-hen) (Director), Hunter x Hunter (Director), SPY x FAMILY (Director), Dororo (Director), SPY x FAMILY Cour 2 (Director), SPY x FAMILY Season 2 (Director), Rurouni Kenshin (Director), Mobile Suit Gundam UC (Director) and 9 more.