
Quick answer — Junichi Okada voices Shun Kazama in From Up on Poppy Hill, Arren in Tales from Earthsea, Yuuichirou Sawamura in From Up on Poppy Hill.
Junichi Okada voices Shun Kazama (From Up on Poppy Hill), Arren (Tales from Earthsea), Yuuichirou Sawamura (From Up on Poppy Hill).
Shun Kazama is voiced in Japanese by Junichi Okada.