
Quick answer — Kyouhei Natsume voices Akito Oota in Inexpressive Kashiwada and Expressive Oota, David in Love Through A Prism, Zhores Rimsky in Irina: The Vampire Cosmonaut and 3 more characters.
Kyouhei Natsume voices Akito Oota (Inexpressive Kashiwada and Expressive Oota), David (Love Through A Prism), Zhores Rimsky (Irina: The Vampire Cosmonaut), Erwin Adonis Coronaria (The Most Heretical Last Boss Queen: From Villainess to Savior Season 2), Tatsuya Oda (Loner Life in Another World), Rondo (Monster Eater).
Akito Oota is voiced in Japanese by Kyouhei Natsume.