I Met the Male Lead in Prison

the long version

One day, I opened my eyes and found myself in... prison?!That's right. Out of all the characters I could've reincarnated into, I woke up inside a 19+ rated romance novel as the villain's younger sister. To make things even worse, I was locked up inside the infamous Kambrakam Prison for my brother's crimes.Deep within the very same prison lies Henrich Doran von Hel, who's rumored to be suffering from a curse that turns him into a beast. In the original novel, he's supposed to meet the female lead