The age of eighteen is the prime of youth. They are in an innocent and romantic love. At eighteen, they naively believe that as long as you are by their side, it is the happiest thing in life. No one expected that tragedies often happen in calm situations.
A car accident caused minor injuries to the girl and the death of the boy. This was a huge blow to her who had never been exposed to death.
Everyone thought the car accident was just an accident, but unexpectedly, there was an eighteen-year-old secret hidden behind it. He turned out to be the child of the Great Demon King hidden in the human world. When he turned eighteen, he had to return to the demon world.
Yin and Yang are separated. From now on, you will no longer be in my world. This is how I can endure the days without you.
So the boy begged his father to give him a chance to be reborn so that he could spend his only life with his beloved girl. Otherwise, what's the point of having eternal life and powerful magic? Without her around, everything is just dust...
However, everything requires equal exchange, so what price does he need to pay?