
Quick answer — Seong-Rak Jang worked on Solo Leveling Season 2 -Arise from the Shadow- (Original Character Design), Solo Leveling (Original Character Design), Solo Leveling -ReAwakening- (Original Character Design).
Seong-Rak Jang worked on Solo Leveling Season 2 -Arise from the Shadow- (Original Character Design), Solo Leveling (Original Character Design), Solo Leveling -ReAwakening- (Original Character Design).