Why Do They Always Try to Corrupt My Filial Piety?

After reincarnation, Lu Ran gained a cheat code. As long as he was self-disciplined and respectful to his bound partner, and upheld filial piety, he could become an unparalleled Immortal Emperor once his filial piety was fulfilled. Conversely, if he deviated from the path, he would be punished by righteous lightning. Faced with his alluring and enchanting master, his sorrowful and mature sect leader's wife, his gentle and intellectual older sister, and his dignified and noble empress... Lu Ran was at a loss: "They are all too skilled. This path to becoming an emperor is truly as difficult as ascending to heaven!"