Sung-Gon Hwan

Hwan Sung-Gon (환성곤, Hwangseon-gon) is a mysterious Natural Ability user who is came to soul collecting Soul Stones to save his daughter, Hwan Sung-Ah. He recently got instated as a replacement Chemistry teacher and he has connections to the Irregular Magician.

He is extremely powerful summoner and fighter. His rank in Abyss is SSS.