He is the infamous leader of the Demon Cult, and she is a bounty hunter that no one knows about.
She saved him to repay her kindness.
He loves her to get out of trouble.
The gears of fate pushed them in different directions many years ago. In the end, he realized that he was just a shadow hiding darkness and could never become the bright white moonlight shining into her heart.
Intention: Jianghu, there is cause and effect, there is love and hate.