She was the tyrannical princess of the Dragon Kingdom. Jeun came to the throne after killing the former dragon king whom she considered very flexible.
The acts of this woman did not forgive anyone who broke the rules, the death penalty was a fact for any minor crime. One day a portal absorbed her sending her to a world ruled by a demon god who enjoyed the destruction and death of the inhabitants. A succession of situations and people made Jeun realize that what she was doing in the Kingdom of Dragons was not right. Her heroin instinct awoke and thus face this fearsome demon with the sole purpose of vindicating herself with people and the kingdom.