The sky cracked like broken glass, shards of light dancing across the heavens.
When Nox opened his eyes, the world had already changed.
He sat up slowly, surrounded by a courtyard bathed in floating runes and soft azure light. Gothic towers rose around him like silent watchers. Strange birds circled overhead, their wings made of glowing threads. The ground beneath him pulsed faintly with magic — foreign, alien, and unnervingly alive.
"This… isn't my world," Nox whispered.
He looked down at his hands — still human, still sixteen. His clothes, however, weren't his usual hoodie and jeans. Instead, he wore a dark-academy uniform embroidered with faint magical sigils that shimmered every time he moved.
A deep voice echoed in his mind.
> [System Initialization: Forbidden Host Confirmed.]
[Welcome to the World of Strongest Women – Academy Sector.]
[WARNING: Male Identity Detected. ERROR. ERROR.]
His breath caught. "Wait… I'm the only guy here?"
Before he could process more, a group of students appeared at the edge of the courtyard. Girls in dazzling robes, some floating with enchanted boots, others bearing weapons that hummed with pure mana.
They stopped when they saw him.
Silence.
Then whispers.
"...A boy?"
"Is that real?"
"Impossible. No male has ever stepped foot here!"
He stood slowly, hands raised in caution. "I don't know how I got here. I just—"
"Silence!" A voice cut through the tension like a whip.
From among the crowd, one girl stepped forward. Her presence was suffocating — golden hair, violet eyes, a crest glowing on her chest that marked her as Elite Class.
"I am Rin, Student Council President of the Yuri Academy," she said coldly. "And you, outsider, have broken the one unbreakable law."
Nox blinked. "Which is…?"
"No men. Ever."
He took a step back. "Look, this isn't my fault. One second I was in my room—next thing I know, some light dragged me in here!"
She narrowed her eyes. "You were summoned?"
Before he could answer, the sky pulsed again. A magical circle flared high above, and a holographic window blinked open in front of every student.
> [Emergency Alert: A Forbidden Thread Has Entered the Weave.]
[All systems compromised.]
[FEMALE DOMINION UNDER THREAT.]
Gasps. Screams. Students began drawing weapons. Magic flared.
Nox's heart raced. "This is bad…"
A second voice echoed through the system — smaller, weaker, but familiar.
> [Nox, if you're hearing this… I'm sorry. I had no choice.]
His eyes widened. "Kiris…?"
The message vanished. The name meant something. A face flashed through his mind — a girl with silver hair and eyes like winter — but the memory was hazy, tangled in fragments.
Then Rin raised her hand. "By the laws of this world, you should be erased."
"Wait, what?!"
She pointed her finger at him. Mana surged into a spear of light. "You are the Forbidden One. And you will not survive this academy."
And just like that — he ran.
Through the screaming halls, past glowing runes and shocked eyes, chased not only by the most powerful girls in the realm…
…but by a truth he had yet to uncover.
Who summoned him?
Why a boy?
And why did his system call him forbidden?