Kurotsuba City balances order and unrest, where modern districts stand beside neglected streets and reputations spread quickly. Train lines divide wealthy commercial centers from aging industrial blocks and crowded neighborhoods where territory matters. Among the city’s many schools stands Shōryū Academy, infamous for its delinquent culture and fighters who build reputations through strength rather than grades.

Shōryū Academy was never truly meant to be a normal school. On paper, it exists as an “alternative institution” designed to handle students who have been expelled, rejected, or pushed out of every other school willing to deal with them. Officially it offers troubled youth a final chance at education. Unofficially, it is closer to a proving ground than a campus.

The buildings themselves feel like they were abandoned long before the students arrived. Concrete walls are cracked and stained with decades of graffiti. Broken windows are patched with wire mesh or wooden boards. Rusted railings rattle whenever someone runs down the stairwells. The classrooms still have chalkboards, desks, and lesson plans, but they rarely feel like places meant for learning.

Teachers exist, but most of them stopped trying to control the student body years ago. They lecture quietly, collect attendance, and avoid getting involved in conflicts whenever possible. Administrators mostly stay inside their offices signing paperwork and pretending the situation is manageable. Police occasionally patrol the streets surrounding the academy, but very few officers willingly step through the school gates.

Once a student enters Shōryū Academy, they quickly understand one thing: authority inside the school does not belong to the staff.

It belongs to whoever is strong enough to take it.

Life inside the academy operates on a completely different set of rules from the outside world. Classes still run on schedule, but attendance means little. Homework exists, but few students bother with it. Exams appear every semester, yet grades rarely influence anyone’s future.

Instead, reputation determines everything.

A student’s standing inside Shōryū Academy is built through fights, alliances, and survival. Strength earns respect. Loyalty earns protection. Weakness invites attention from people looking for an easy target.

Fights are so common that they barely interrupt daily routines. The sound of fists hitting lockers, desks being shoved aside, or someone crashing into a wall blends into the background noise of the building. Broken glass and cigarette ash scatter across stairwells. Lockers carry layers of carved names, gang marks, and challenges written by students daring others to confront them.

Sometimes the violence erupts suddenly. Other times it builds slowly through rumors spreading through the halls until two groups finally collide somewhere in the courtyard or gym.

The academy grounds themselves are divided in subtle but constantly shifting ways. Certain staircases, rooftops, corridors, and cafeteria tables are unofficially claimed by different crews of delinquents. These territories are rarely marked formally, yet everyone seems to understand which areas belong to which group.

Sitting in the wrong chair, walking through the wrong hallway, or simply standing somewhere at the wrong time can be enough to start a confrontation.

But despite the constant chaos, Shōryū Academy is not completely lawless. Beneath the violence exists a strange form of order that most students come to understand after spending enough time inside.

A handful of dominant gangs hold the majority of influence within the academy. These crews control territories, enforce their own rules, and constantly test one another’s strength. Their colors, uniforms, and symbols are recognized throughout the school, and their members move through the halls with the confidence of those who know they belong to something powerful.

The most dominant of these factions is the Black Dragons, led by Reina “Dragon” Hayashi, the stoic and terrifyingly respected fighter widely recognized as the strongest female in Shōryū Academy. Under her rule, the Black Dragons are feared not just for power, but for their discipline. They represent order enforced through overwhelming strength.

The Iron Reapers are ruled by Kaoru “Havoc” Minami, a monstrous tank of a fighter whose raw power and volcanic temper have made her one of the school’s most feared brawlers. The Reapers dominate through brute force, physical intimidation, and the simple belief that direct strength decides everything.

The Silent Vipers are led by Ayame “Shade” Kurogawa, a masked strategist who built her reputation through preparation, weapon mastery, stealth, and ruthless battlefield control. Her gang is made up of students who survive not through brute strength, but through intelligence, coordination, and patience.

Then there are the Burn Marks, the most chaotic faction in the academy, led by the infamous twin duo Mika “Ash” Fujimoto and Daichi “Inferno” Fujimoto. Mika is a mocking, sharp-tongued tomboy who thrives on provoking others, while Daichi is a loud, vulgar yankee delinquent who charges into battle like a living riot. Together, they function as a single destructive force split into two bodies, and their gang reflects their wild, synchronized chaos.

Yet not every powerful fighter in Shōryū Academy belongs to a gang.

Walking outside the faction system entirely is Ren “White Wolf” Kazuma, the academy’s most feared lone wolf and strongest male fighter. Ren has no gang, no territory, and no loyalty to the school’s politics, yet his reputation rivals that of the top leaders. He moves alone, fights alone, and is respected precisely because no one can truly control or predict him.

One of Shōryū Academy’s most infamous traits is the sheer number of tomboy delinquent girls and delinquent boys who fill its halls. The school is packed with girls who reject softness and boys who embrace brutal street pride, creating a culture where swagger, scars, and strength matter more than appearances ever could. Muscular tomboys in torn uniforms, masked girls with bats slung over their shoulders, loud yankee boys with pompadours, bruised brawlers in tracksuits, and cold-eyed fighters in customized jackets are all part of everyday life.

These are not polished students admired in ordinary schools. They are hardened delinquents who wear their damage like medals. Bandaged knuckles, scarred jaws, ripped coats, heavy boots, and gang colors are everywhere. Some rely purely on fists, others on bats, chains, knives, or improvised weapons. In Shōryū Academy, style itself can feel like a challenge.

Their presence changes the atmosphere of any hallway they enter. Conversations quiet down. Students move aside instinctively. Even experienced fighters think carefully before provoking them.

Gangs form and collapse constantly inside Shōryū Academy. Dozens appear every year as new students attempt to carve their names into the school’s reputation. Some groups survive only a few weeks before being crushed by stronger rivals. Others slowly build influence until they control entire sections of the academy.

Each gang develops its own culture. Some thrive on pure aggression and chaotic brawls. Others prefer intimidation and extortion. A few rely on careful planning, coordination, and weapon-based tactics.

Territory disputes are common. A gang that holds control of the gym one month might lose it the next after a single decisive fight. Rooftops, staircases, locker corridors, and sections of the courtyard constantly change hands depending on who proves strongest.

Because of this instability, power inside the academy is never permanent.

Students understand that every dominant fighter will eventually face challengers. Every reputation will eventually be tested. Every leader will one day have to defend their position against someone determined to take it.

Rumors travel quickly through Shōryū Academy. Stories of brutal fights spread across classrooms and rooftops within hours. A single victory against the right opponent can turn an unknown student into a rising name overnight.

At the same time, a humiliating defeat can destroy a reputation just as quickly.

Every corner of the academy carries traces of past conflicts. Desks carved with old gang names. Walls painted with faded symbols. Lockers dented from fights long forgotten.

These marks serve as reminders of the countless battles that have taken place inside the school.

To outsiders, Shōryū Academy looks like a failure of the education system, a place where discipline collapsed and violence replaced learning.

But to the students who live within its walls, the academy represents something very different.

It is a crucible.

A place where strength defines identity. Where loyalty determines survival. Where reputations are forged through bruises, broken knuckles, and sheer determination.

Every day new challengers rise, hoping to prove themselves against the fighters who came before them.

And somewhere within the endless cycle of rivalry, chaos, and ambition, a single truth defines life at Shōryū Academy:

Power is never permanent.

It only belongs to whoever is strong enough to claim it and ruthless enough to defend it.

[Fun Fact] In Kurotsuba City, people say two schools and names define the river’s divide: Hikarimori Institute with the towering, muscular powerhouse of the Iron Vixens, Tora Kurogiri, and Akabane Academy with the tall, elegant blonde strategist with her cold, commanding presence and expert weapon skills, Kira Fujimoto of the Red Serpents. One rules through overwhelming force, the other through flawless control. Though their schools sit on opposite sides of the city, both school gangs and leaders became legends of Shōryū Academy’s world, admired even by the Shōryū leaders who quietly consider themselves fans.