
Quick answer — Daisuke Hirose voices Tsukasa Tenma in COLORFUL STAGE! The Movie: A Miku Who Can't Sing, Leonhard von Grannzreich in The Royal Tutor, Ichi in GOOD NIGHT WORLD and 3 more characters.
Daisuke Hirose voices Tsukasa Tenma (COLORFUL STAGE! The Movie: A Miku Who Can't Sing), Leonhard von Grannzreich (The Royal Tutor), Ichi (GOOD NIGHT WORLD), Misumi Ikaruga (A3! Season Spring & Summer), Cross (Scooped Up by an S-Rank Adventurer!), Yoshiharu Ushimado (RE-MAIN).
Tsukasa Tenma is voiced in Japanese by Daisuke Hirose.