Shen Du has been dead for three hundred years. He has been promoted from ghost king to ghost king, and is about to be promoted to emperor of the underworld.
Then the heaven issued a decree: You owed a love debt in your previous life, and you will not be able to ascend until you repay it.
Love debt object? The Prince of the Nine Heavens, Xuan Ling - the cold-faced God of War who was frightened by the news in the three realms.
Shen Du felt that he might not be able to repay the debt: he couldn't even enter the gate of heaven.
Until one day, Xuan Ling was seriously injured and fell into the underworld, and Shen Du rescued him.
"A promise of life-saving grace?" Shen Du said casually.
"Okay."
Shen Du: "...?"
Later he learned that the prince had been waiting for him for three thousand years.
Wait for his reincarnation, wait for his return.
Before he died in his last life, he still had one sentence left to say.
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Intention: Love is a willing choice, not any debt