
Quick answer — Masato Amada voices Junpei Shibayama in Digimon Frontier, Kouji in Initial D 1st Stage, Yoshito Morozumi in Beck: Mongolian Chop Squad.
Masato Amada voices Junpei Shibayama (Digimon Frontier), Kouji (Initial D 1st Stage), Yoshito Morozumi (Beck: Mongolian Chop Squad).
Junpei Shibayama is voiced in Japanese by Masato Amada.