|Dr. Jin Young-sam|
Season 1 Ep. 1 - Prelude 1
Dr. Jin Young-sam is Rano's friend, and a researcher on Demans.
In his early years he was a researcher together with Miena. He became a Doctor later on and after the Deman attacks he decided to commit suicide but stopped by Rano who reminded him he was still alive. And soon formed a group together with Rano to eradicate and research about the demans.
Healing - He became the doctor of the group after Rano found and saved him.
Research - He's an excellent researcher.