Lord of the Mysteries: The Red Priest

Good news: I've transmigrated. Bad news: It's into the world of Lord of the Mysteries. Good news: I’m familiar with most of the plot related to the Mysteries, even if not all of it. Bad news: I seem to be a backup pawn prepared by the Celestial Worthy, and my goals fundamentally clash with the protagonist's. It's either him or me. But all of that pales in comparison to the real problem: I just transmigrated, and someone already forced me to drink the Assassin potion! Two bottles!!! (This story only uses and expands upon settings from Lord of the Mysteries. It does not involve Circle of Inevitability.) --- AI TRANSLATION RAW: 詭秘：從天尊備胎到紅祭司 AUTHOR: 八隻手的頭足類