第1章 上门 

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Good news: I have traveled through time.
  Bad news: I have traveled through time to the world of the Lord of Mysteries.
  Good news: I am familiar with the plot related to mysteries, although not all of them.
  Bad news: I seem to be the backup of Tianzun, and I have a fundamental conflict with the protagonist. It's either you die or I live.
  But these are not important. The important thing is that I was forced to drink the "Assassin" potion just after I traveled through time.
  Two bottles!!!
  (This book only involves and uses the settings in "Lord of Mysteries", and will not involve "Fate Ring")