
Quick answer — Yukari Kokubun voices Tsunayoshi Sawada in REBORN!, Kaname Oku in Gokujo., Carmilla in Holy Knight.
Yukari Kokubun voices Tsunayoshi Sawada (REBORN!), Kaname Oku (Gokujo.), Carmilla (Holy Knight).
Tsunayoshi Sawada is voiced in Japanese by Yukari Kokubun.