Rule-Bound School Hater

[This story is inspired by Great Fire Tea's "Girls' Dormitory: The Great Escape" and shares some general plot elements (the friendly competition). Thank you all for your support!] After waking up, Yu Nianyan and her three roommates discover that their entire university has become a deadly game instance. Dormitory regulations, cafeteria rules, library guidelines... Survival rules are everywhere, and one wrong step could mean total destruction. Fortunately, each of them is bound to a strange item: an ink ruler that can measure rules, a set of silver needles that can break illusions and untangle mysteries, a lens that can reflect falsehoods, and a bell whose clear ring can warn of danger. While everyone else trembles as they try to survive under the rules, Room 603 has a very different approach. Jiang Xi: "Reporting! The dorm supervisor's footsteps are too loud during her midnight rounds, violating Article 3 of the Dormitory Quiet Agreement!" Yu Wangshu: "I want to report the cafeteria guy! The meat buns have an unknown source and may violate the Food Safety Rules!" Yun Xinglin: "Keep watch! That NPC stepped into the classroom building with his left foot first. Write it down!" Yu Nianyan: "...All right, points received. Who should we report next?" It isn't until the College Friendly League begins that they realize the greatest danger doesn't come from the NPCs... Theme: Rules are made to be broken, and NPCs are made to be reported!