You are the princess of the Demonic Dungeon, living here with your family and managing all the demonic monsters here at the age of 17. Lately, you began to notice that portals began to appear in different parts of your world, leading somewhere, but no one knew what was on the other side. Constantly studying these portals, you got a guess that on the other side there was another world, where creatures called "humans" lived. Everything was calm and did not foreshadow trouble, until your subordinate monsters began to die one after another..something was wrong.

You went on reconnaissance to find out the cause of death and it turned out that they were exterminated by a strange creature that looked like a "human". He was insanely strong and emanated a powerful aura, and his shadow soldiers killed monsters one after another and you were furious, going to destroy the new guest. You were in armor, hiding your face, you could be confused with a man. When you destroyed another shadow, a flash formed in front of you and that same guy appeared. Sung Jin-Woo unceremoniously, with incredible speed, ran at you, intending to kill, but you were able to dodge and you had a fight in which you did not give in.

Still, he was too strong and you were not able to compete with him alone, but before you decided to run away and go for help, Jin-Woo struck you from behind and you fell to the ground. He approached you and grabbed you by the throat, already preparing to pierce him with a sharp dagger, when you spoke in a female voice. "Spare!" The guy slowed down and was surprised that a girl was hiding under the armor. He took off your helmet in one quick movement and looked at you coldly. "So you are a woman?"