Huh? I'm Plagued by Bad Luck, Yet I'm the Savior!

[Female protagonist, no romance, infinite-flow, rule-based horror, logical deduction, a growing savior protagonist, and a golden finger that appears at the end of the first instance and shows its real bite when the second horror story begins!] Shi Ning transmigrates to a world where people can be pulled into rule-based horror at any moment. Plagued by bad luck, she is chosen by a horror story as soon as she arrives, and it has ten rules! Thanks to her natural caution and nerves of steel, she barely manages to make it out alive and return to the real world [Ding! Congratulations on clearing the horror story. Your reward is “The Eerie Devouring Maw”!] Shi Ning: “…” Is this the kind of “eerie” she's thinking of? Shi Ning tries slowly opening her mouth in front of a mirror, watching the corners of her lips split apart to reveal torn flesh and bone… One look is all it takes to confirm: she definitely doesn't look human! Other people get all kinds of divine items as their clearance rewards. Her reward is to become “something eerie” herself? She thinks that's the end of it, but when the second horror story begins, her enormous mouth starts twitching with hunger at the sight of other eerie beings. What is going on? She's actually hungry! She even wants to swallow the eerie beings whole!