
Quick answer — Kouji Yamamoto worked on Mr. Villain's Day Off (Sound Director), Muhyo & Roji's Bureau of Supernatural Investigation (Sound Director), Rokudo's Bad Girls (Sound Director) and 1 more anime.
Kouji Yamamoto worked on Mr. Villain's Day Off (Sound Director), Muhyo & Roji's Bureau of Supernatural Investigation (Sound Director), Rokudo's Bad Girls (Sound Director), A Gatherer's Adventure in Isekai (Sound Director).