He is the messenger of hell, in charge of guiding souls to their life cycle so that they can reincarnate again. 500 years of pure loneliness have made him forget the feeling of loving someone, and only seeks revenge for the one who betrayed him, but due to certain circumstances of destiny he will meet an exorcist witch named Xiao Pei, will she be the one who can return that feeling of love once again?

(translation from: My life fansub)