
Quick answer — Akira Koga voices Tatsuki Washio in HAIKYU!! LAND VS. AIR, Host Club Tenchou in TRILLION GAME, Mad Wolf in 'Tis Time for "Torture," Princess and 3 more characters.
Akira Koga voices Tatsuki Washio (HAIKYU!! LAND VS. AIR), Host Club Tenchou (TRILLION GAME), Mad Wolf ('Tis Time for "Torture," Princess), Yumiella Chichi (Villainess Level 99: I May Be the Hidden Boss but I'm Not the Demon Lord), Kizuki Asatsuji (Dead Account), Seitarou Houshou (The Dinner Table Detective).
Tatsuki Washio is voiced in Japanese by Akira Koga.