All the Big Shots Are Coming for Revenge

I've started a new book, "The Goddess Descends [Infinite]". Feel free to check it out, everyone! Blurb: Ling Xi was trapped in an apocalyptic world for a hundred years. After dying countless times, she finally saw the truth. When the last zombie was eliminated, her merit was complete, and she died in peace. Who knew that when she opened her eyes, she'd be standing in a school full of skeletons? The skeleton teacher said, "You, the new transfer student, come over and get your books!" Ling Xi: ??? I have to go to school even after I die? No thanks! The legendary ultimate "Doomsday Goddess" instance is incredibly difficult, and no one has cleared it to date. Ling Xi spent a hundred years as a test subject in the apocalypse instance, lying motionless the whole time, and finally made it out. She discovered she was in a beginner instance, playing a transfer student at a skeleton school, while her teammates had no idea what was going on. After a hundred years trapped in a loop of doomsday instances, this poor thing was finally free! And yet she was still a pitiful outcast, disliked by everyone and unable to find a team. QAQ. Why was she always the most miserable wherever she went? All she could do was hang out with her skeleton classmates. Then their vacation trip suddenly turned into a horror instance. At last, her teammates could see the real school: skeletons everywhere, eerie and sinister! Her teammates broke down. "Damn, we're done for! We're going to die here!" Ling Xi was confused. What were they so scared of? She patted the big boss's skull. "Poor little skeleton, I'll protect you!" I've been so nice, now hurry up and raise my mission progress. I want to clear this instance! Her teammates: ... Blurb for this story: All the pitiful people I once saved grew into big shots and came back to take revenge on me. Theme: