I'm a Liaison in Rules and Ghost Stories

The whole world is involved in strange rules, and death copies appear randomly. Lin Ruanruan was selected, and everyone thought that this cute girl would not survive the first episode. Until they saw that the most terrifying boss in the dungeon respectfully called her "little master", and she complained that the dungeon was too scary. The next day, the dungeon was permanently closed due to "unreasonable difficulty settings"