I Became a Leader in a Wretched Prison

I Became a Leader in a Wretched Prison
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.