ADN-786 - Female Prisoner 407: Vowing Revenge in Prison - Ichika Hoshimiya

Nami, a woman in her late 20s who missed her chance at marriage while helping her father's factory, gets engaged to a banker named Sejima. However, the night before her wedding, she is attacked by a factory worker and stabs him in self-defense, only to be sentenced to prison for excessive force. It turns out the whole thing was a scheme by Sejima to steal her father's patent. Sold into prison as a sex slave, Nami endures endless abuse until she transforms into a cold, emotionless woman seeking ruthless revenge.