He Jin × Xiao Shaoan (He × Ren)
The main thing is sweet but the ending is be, micro knife, thunder's careful entry
Thousands of years ago, there was a war between humans and demons, and He Jin and Xiao Shaoan had to face each other. But the moment He Jin saw Xiao Shaoan, he lost consciousness. When he woke up, they no longer knew each other. It was as if everything was back to where it started. What was going on?
Because of the difference between humans and monsters, He Jin waited for Xiao Shaoan life after life, and also protected her life after life.
"I said, I will protect you for the rest of my life and I will never break my promise."
"Even if I reincarnate for several lives, I will still fall in love with you over and over again until I can no longer reincarnate."
Purpose: Loyalty till death