I opened my eyes one day and shockingly see myself in Prison as the villain’s younger sister?! It’s in a 19+ rated romance novel, different from all the characters I could’ve reborn into. To make matters worse, I was imprisoned for my brother’s misdeeds at the dreaded Kambrakam Prison. Henrich Doran von Hel, who is said to be suffering from a curse that turns him into a beast, is imprisoned deep within the same cell. He was intended to meet the female protagonist and spend an amorous night with her here in prison in the original story… But thanks to my presence, the narrative has gone astray. What kind of future awaits me now that I’ve become entangled with the novel’s biggest villain and its male protagonist?!