
Quick answer — Kunihiro Kawamoto voices Tsubo ni Fuuji Rareta Sarumen in Natsume's Book of Friends Season 4, Tamotsu Murakami in Kaiji - Against All Rules, Sentarou no Chichi in Kids on the Slope and 4 more characters.
Kunihiro Kawamoto voices Tsubo ni Fuuji Rareta Sarumen (Natsume's Book of Friends Season 4), Tamotsu Murakami (Kaiji - Against All Rules), Sentarou no Chichi (Kids on the Slope), Nick (Baccano! Bangai-hen), Omoi (Naruto Shippuden the Movie: Blood Prison), John (My Wife Has No Emotion), Burk Lean (BACK ARROW).
Tsubo ni Fuuji Rareta Sarumen is voiced in Japanese by Kunihiro Kawamoto.