
Quick answer — Shou Komura voices Takuya Seo in Gals Can't Be Kind to Otaku!?, Percival in The Seven Deadly Sins: Four Knights of the Apocalypse.
Shou Komura voices Takuya Seo (Gals Can't Be Kind to Otaku!?), Percival (The Seven Deadly Sins: Four Knights of the Apocalypse).
Takuya Seo is voiced in Japanese by Shou Komura.