
Quick answer — Kousuke Echigoya voices Kouchou in You and I Are Polar Opposites Season 2, Shirasu Kashiwaya in Akane-banashi, Senri in The World Is Dancing and 7 more characters.
Kousuke Echigoya voices Kouchou (You and I Are Polar Opposites Season 2), Shirasu Kashiwaya (Akane-banashi), Senri (The World Is Dancing), Shounosuke (YAIBA: Samurai Legend), Jiiya (The Little Lies We All Tell), Pomeranian (Mobile Suit Gundam GQuuuuuuX), Tem Ray (Mobile Suit Gundam GQuuuuuuX), Hone-chan (Puniru is a Kawaii Slime) and 2 more.
Kouchou is voiced in Japanese by Kousuke Echigoya.