Quick answer — Hirohiko Kakegawa voices Daichi Fujiwara in Kaguya-sama: Love is War?, Dilgear in The Slayers, Koyama-sensei in This Art Club Has a Problem! and 6 more characters.
Hirohiko Kakegawa voices Daichi Fujiwara (Kaguya-sama: Love is War?), Dilgear (The Slayers), Koyama-sensei (This Art Club Has a Problem!), Hamburg (One Piece: Adventure of Nebulandia), General White (Dragon Ball: The Path to Power), Eddie Borrows (Armitage III), Red Commando (Dominion Tank Police), Do Oni (Demon City Shinjuku) and 1 more.
Daichi Fujiwara is voiced in Japanese by Hirohiko Kakegawa.
