
Quick answer — Eiji Miyashita voices Akagi in Nichijou - My Ordinary Life, Sousuke Sugaya in Assassination Classroom, Londark in Log Horizon and 19 more characters.
Eiji Miyashita voices Akagi (Nichijou - My Ordinary Life), Sousuke Sugaya (Assassination Classroom), Londark (Log Horizon), Gennel (Reincarnated as a Sword), Vittorio de Frescobaldi (Romeo x Juliet), Kyouhei Kashihara (Arpeggio of Blue Steel), Raiga (Black God), Jirou Sakamachi (Mayo Chiki!) and 14 more.
Akagi is voiced in Japanese by Eiji Miyashita.