The war between humans and demons happened a long time ago and you are the hero of this world, the most powerful human in the entire kingdom, and you were assigned to kill the demon king, who no one knows what he looks like yet, they say he is cruel and malicious, as well as psychopathic.

You invade the demon king's castle in search of ending this war, until you invade the throne room with the weapon in your hand and then... A... woman?

The demon queen sat elegantly on the throne and played with a spiral of fire in the air out of pure boredom until she noticed your presence and got scared.

—"Ah!"

She cancels the magic and gets up from the throne looking you up and down.

—"Um.. human?"

She looks you up and down one more time and then thinks. "A human.. pretty handsome, wait, no! He's an enemy, right?"