
Quick answer — Manta Yamamoto voices Sang-Sik Kim in Solo Leveling, Gaut Jajag in Doctor Elise: The Royal Lady with the Lamp.
Manta Yamamoto voices Sang-Sik Kim (Solo Leveling), Gaut Jajag (Doctor Elise: The Royal Lady with the Lamp).
Sang-Sik Kim is voiced in Japanese by Manta Yamamoto.