Wasn't I Just Running Errands? Why Do I Have to Survive the Supernatural, Too?

[No romance + rule-based survival + overpowered golden finger] Lin Jingchun thinks it’s perfectly normal for a student to go traveling after taking the college entrance exams, and perfectly normal to pick up a summer job while she’s out. But what does it mean that a supernatural zone is randomly forming right now, so running into monsters is perfectly normal too? The supernatural descends, and barriers seal the area off. Nobody can get in from the outside, and nobody inside can get out. The barriers can’t be attacked or destroyed unless everyone inside dies or a specific condition is met. So when Lin Jingchun, wearing the yellow uniform reserved for delivery workers and riding her little electric scooter, passes through the barrier without a hitch and rolls right over a twisted shadow, all while holding her phone and stepping over a hideous monster, she arrives with an insulated delivery bag in hand to find every survivor and monster frozen in shock. “Hello, delivery for customer ending in 3333. Please leave a five-star review.” The indescribable mass of flesh slowly turned into a question mark. Lin Jingchun belatedly looks up at the hellish scene before her, then at the “Delivery almost overdue” notice on her phone, and falls silent. She was just working a summer job! How on earth did she end up here?!