
Quick answer — Hiroshi Takahashi voices Isami Kondo in Rurouni Kenshin OVA: Trust & Betrayal (Tsuioku-hen), Houji Sadojima in Rurouni Kenshin, Takeshi Gojou in Kodocha.
Hiroshi Takahashi voices Isami Kondo (Rurouni Kenshin OVA: Trust & Betrayal (Tsuioku-hen)), Houji Sadojima (Rurouni Kenshin), Takeshi Gojou (Kodocha).
Isami Kondo is voiced in Japanese by Hiroshi Takahashi.