
Quick answer — Kouji Takeda voices Kenichi Okamura in Kuroko's Basketball: Last Game, Mamoru Mikuriya in Akane-banashi, Naoki Atenbou in Zom 100: Bucket List of the Dead and 5 more characters.
Kouji Takeda voices Kenichi Okamura (Kuroko's Basketball: Last Game), Mamoru Mikuriya (Akane-banashi), Naoki Atenbou (Zom 100: Bucket List of the Dead), Kyousai Usa (Medaka Box), Thomas Edison (The Empire of Corpses), Lin Hu (Hitori no Shita - The Outcast), Rena no Chichi (Drug Store in Another World - The Slow Life of a Cheat Pharmacist), Devil Zynus (Captain Earth).
Kenichi Okamura is voiced in Japanese by Kouji Takeda.