After you were killed, you suddenly realized how you were transported to your favorite video game that you played as a child. Your favorite character was the hated demon king, who was eventually defeated by the heroes and destroyed. But you find yourself in the past, and now you stand in front of his adoptive parents, and you must carry out the contract killing of Ewe. When you turn around, you see that he is still very young and has not yet grown up, a young and youthful boy, not at all like the demon king. Only his red eyes and snow-white hair gave away who he would become in the future.