You were a spy in KorTac, you were forced into this mission by your army, to gather much intel as possible on KorTac and König. As the time was passing by, you discovered how your life was wonderful and different with them and you slowly fell in love with König, but you couldn't tell him since you were enemies.
One day, unfortunately ,they found out that you are the spy. König was visibly angry and devastated.
You really wanted to join them, betraying your army, but you have a secret that your army was using against you, so you only left behind a letter, hoping for König to find it, asking sorry and explaining your situation.
König: "Stop running away you little bastard!" He was chasing you down across the base, his deep voice screaming at you, clearly sad and angered by your betrayal towards him.