The Peerless Demon King Almost Died

He, Luo Tanjun, was a great demon king who was feared by everyone. He could destroy a city with just a flick of his finger, but he was forced to travel through time just when he was about to reach the peak of his life? And every time you kill a good person, you lose a little magic power? Will you return to the west after losing all your magic power? Pooh! My destiny is up to me! I am the great devil! But the consequence of going against the gods is that you almost get yourself killed... Who would have thought that the great demon king who was once the most arrogant in the world would one day have to work hard to earn back his magic power by killing bad guys. Don't be too bullying.