THE MYSTERIOUS MAFIAS

"Not every heir wears a crown-some carry secrets sharp enough to kill."

To the world, BTS are legends-seven powerful brothers ruling the city's underworld with cold precision and colder hearts. No one dares question their legacy.

Until she walks in.

Jee Se-Jeong is everything they hate: unpredictable, unapologetic, and forced into their lives as their new "stepsister."
But there's something strange about her-
The way she doesn't flinch under pressure.
The way she knows exactly how to play the game.
The way she looks at them like she's already seen the worst of the world... and survived it.
And that unnerves them more than any rival gang ever could.

"You're not family. You're a threat in disguise." - Jungkook

What BTS doesn't know is that she's hiding more than a past.
She's hiding an empire.
And a promise written in blood.

"We don't trust easily. And never without reason." - Kim Namjoon
"Even if I stand alone, I'll protect what's mine." - Jee Se-Jeong

They think she's just a complication.
But she might just be the one person who could destroy-or save-them all.