Shocking! My School Became an Infinite Flow Instance

[No romance + clear-headed, calm heroine + character growth + a touch of ensemble cast] [Instances are invading the world. Unwilling to let her world turn into a game instance, Xin Jia works hard to solve the problem and kill the Boss. Hauntings + rule-horror mysteries + battle royale + other instances] First instance: Two strange transfer students arrive in Xin Jia’s class, and one bizarre thing after another starts happening at school. No matter what, Xin Jia will do her best to make everything go back to normal. After all! She, Xin Jia, absolutely refuses to stay at school forever! Second instance: Xin Jia receives a notice telling her to attend an open lecture. When she arrives, she discovers it’s an instance: a rule-horror mystery that gives no rules in advance. Let’s see how Xin Jia finds a way out!