Angels are all twins. Legend has it that every angel is born and goes to great lengths to find another one of himself. They are beautiful, intelligent, and noble. They are elves on earth and messengers of God. She used to be the same, but she didn't find another self. She teamed up with the devil and fell into endless darkness. She indulged herself and hid her innate kindness. She looked at the world cold-bloodedly and killed people like crazy. Killers shouldn't have love, but she accidentally fell in love. . . . .
The story of Xiao Yao and Xiao Mian, will they get what they want?