Lord Demon King, Please Pay Off Your Debts First Before Conquering the World.

Someone else traveled through time and became a demon king, taking control of the world. Kyle traveled through time and became the devil, with a debt of 3,000 I owe 1.5 Million at the beginning The hands are full of old, weak, sick and disabled people "What did the previous Demon King of this trench leave for me?" So he would always ask himself: "If he had known that he would travel to a different world if he died suddenly while working overtime, should he have worked two more days of overtime or two less days of overtime?"