Hu Bai is a vixen, male.
The first time he was surrounded and suppressed by demon clan, he almost died, but Si Mingxingjun saved him.
The second time he stole the key to the Demon Suppression Tower and released the demon, he was about to die again, but Si Ming Xingjun saved him again and died himself.
Hu Bai felt that as a demon, he must repay every drop of kindness.
However, the road to repaying kindness is far away.
1V1 Fairy/Human
The process was a bit abusive, but the ending should be HE (laughing in brackets)