Ranking Reset: The Zero Period Dungeon

## Mujin First High School, the Day the Pecking Order Reset Mujin First High School in Mujin City was the kind of school where midterm rankings decided even your place in the lunch line. Then one night at midnight, a blue gate opened beneath the third basement level. Soon after, the "Dungeon Management Committee" took over the school, and everything was reset. Now what updates every morning on the electronic board in the main lobby isn't grades but the dungeon contribution ranking. The dungeon is open from midnight to 1 a.m., and students call this hour "Zero Period." At midnight the siren wails and students gather in front of the gate. Participation is voluntary, but the ranking turns school life completely upside down. The pecking order hasn't disappeared. Only its axis has changed. But the new axis differs in one way: contribution doesn't lie, can't be rigged, and doesn't ask for your parents' names. In a world where violence doesn't work, the definition of strength is being rewritten in terms of strategy, consistency, and teamwork.

## The Committee's Rules and "Unmeasurable" The Dungeon Management Committee's rules are simple. - Inside the dungeon, the system nullifies any attack aimed at a person. Your opponents are always just monsters and records. - Abuses like extortion, exclusion, and manipulation get your contribution confiscated after a single audit. Punishment is carried out not by fists but by the Committee and the system. - Punishment ends with the stolen contribution returning to the kids it was taken from. The satisfaction explodes in the numbers of the public ranking matches. - The moment someone confides a real-world crisis, the game stops, and Gus Kowalski and the adults step in. In the awakening assessment taken at enrollment, the player received an unprecedented "Unmeasurable" result. Students mock it as a guaranteed last place, but Unmeasurable doesn't mean incompetent; it means unknown. This talent is an offbeat axis that reacts only inside the dungeon, reading the flow of healing, the texture of buffs, and the movement paths of monsters that others can't see. The machine simply couldn't read it. It was never missing.

## The People of Zero Period - **Ethan Russell** — A taciturn classmate who has been hiding his awakened ability, and the eternal runner-up. On the first Zero Period night, when everyone hesitated in front of the gate, he held out his hand saying, "Unmeasurable, huh? Good. Me too." He is your duo partner. Cool-headed, but with real depth. - **Marcus Kane** — The unshakable #1 in the contribution ranking. A competition junkie whose eyes light up only for strong opponents, he issues a challenge: make him take even one step back on the rooftop within ten seconds, and he'll hand over the ranking. - **Julian Price** — President of the strategy game club. A brainy tactician who reads dungeon data on his tablet, he offers to flip the rumors within three days if you move exactly according to his plan. - **Gus Kowalski** — A retired legendary hunter disguised as the school security guard. He carries wounds from his past, and on dangerous nights he leaves the storeroom light on and teaches how to win instead of how to run. - **Chase Whitmore** — Leader of the top-ranker clique. He extorts newcomers' contribution as a "toll" and cuts the weak kids from his team. A cunning, ambitious schemer who knows the loopholes in the rules, but he has his reasons too: an obsession with being #1. Forgiveness belongs to the story; confiscation belongs to the system.

## You Choose the Build At this school, there's more than one path to growth. Training from the basics again with Gus Kowalski in the storeroom at night, items earned in the dungeon, alliances like a duo with Ethan Russell or an operation with Julian Price, and the head-on challenge Marcus Kane threw down. Depending on what you pick first, the player's build changes. Choices stack up into a strategy, and strategies stack up into a ranking. You can dodge Chase Whitmore's clique and their toll extortion, or gather records and evidence to bring them down with a Committee audit. Either way, the resolution happens on the ranking board and within the rules. This dungeon doesn't hurt people. The only thing that gets hurt is yesterday's pecking order. The heart of this story is how far a student who started with near-bottom placement test scores and the nickname "Unmeasurable" can rewrite that order.