[Wuxia Crossover] Parasitism

Ji Sheng is a ghost, a vengeful spirit. Unlike ordinary vengeful spirits, Ji Sheng is a picky eater. He has no interest in absorbing human yang energy. Resentment, loathing, hatred, greed, obsession, delusion: these negative emotions born from the human heart are the food Ji Sheng loves. Parasitism: When two organisms live together, one benefits while the other is harmed. The latter provides the former with nutrients and a place to live. This relationship is called parasitism. PS: The protagonist is a spirit in the early chapters and possesses the villain. Two souls share one body. The protagonist is the bottom. Slow burn. The CP hasn't been decided yet. The author has questionable values, and the protagonist is so ridiculously charming he can break the heavens. No need to feed him any sanctimonious moral lectures.