Quick answer — Shinsuke Sugawara voices Kei Kuramoto in Flying Witch, Archid Walter in Knight's & Magic, Guy Greenwood in Reign of the Seven Spellblades and 7 more characters.
Shinsuke Sugawara voices Kei Kuramoto (Flying Witch), Archid Walter (Knight's & Magic), Guy Greenwood (Reign of the Seven Spellblades), Mithra Kazper (TSUKIMICHI -Moonlit Fantasy- Season 2), Aigi (Alderamin on the Sky), Judgment Nezuya (Planet With), Shouhei Shirai (Lostorage conflated WIXOSS), Ashida (Yuuna and the Haunted Hot Springs) and 2 more.
Kei Kuramoto is voiced in Japanese by Shinsuke Sugawara.
