My Poison Immunity System Is More Toxic Than Any Poison

Fifteen years of laying low, dreaming of a peaceful life—then the system finally arrives. But instead of legendary powers, Xiao Yunxiu gets the "Poison Avoidance System," and her first quest? Save the Crown Princess from poisoning. The reward? An unlimited snack package. In a matriarchal world where women hold all the power, this overlooked younger sister must navigate deadly court intrigue with the universe's most useless cheat ability. When your own system is more dangerous than the poison itself, survival becomes the ultimate game.