Guk Shin was from the Onyx Flame Clan and was one of the few cadets that passed the fifth test of the Demonic Academy. He was a member of the faction that supports Cheon Muyeon.
Appearance[]
TBA
Plot[]
He was one of the cadets that successfully reached Master prowess after the closed room training and passed the fifth test of the Demonic Academy right after Cheon Muyeon, Cheon Kyung Woon and Sama Chak[1].
After Cheon Yeo Woon passed the sixth test, he along with Mu Jinyun gathered all their members and devised a plan in order to terminate the former in the heirship competition. Their plan is to let the other cadets who have grudge with Cheon Yeo Woon deal with him while their faction will deal with his members and persuade them to join and become under Cheon Muyeon[2].