I transmigrated into a novel… but, why did I transmigrate 10 years before the original story?

To make matter worse, the place I transmigrated into was a prison, a place even more dangerous than a jungle.

I struggled and fought to survive, and after 10 years had passed, I became the leader of the inmates.

“Hey, Mint, easy there. Do it moderately.”

“I don’t know what you’re talking about.”

I was known as a good-for-nothing leader, however, becoming the leader in this wretched place has its own advantages. That was why I’ve come to accept it as a privilege instead.

“I could declare you dead on paper. But, you have to do one thing for me.”

“I don’t understand what you mean.”

And then, a chance appeared before me like a dream.

“If you help me, I’ll get you released.”

“What should I do, sir?”

“…”

The warden suddenly ordered the prison’s craziest girl to help him.

“Make the new inmate who’ll enter soon become the leader.”

This place was a prison, a lawless zone.
If I manage to make that person a leader, I will finally be released.

“By the way, it is the men prison you need to go to.”

“…What? How could I even do that?”

“Disguise, of course!”

However…

The new inmate turned out to be the male lead.