Nami, now in her late twenties, had missed her chance to marry because she was helping out at her father's small factory. One day, she received a confession from Imoshima, a bank employee from a client company, and they agreed to get married. However, on the night before the wedding, Nami was attacked by a factory worker and ended up stabbing the man. She was sentenced to prison for excessive self-defense. In truth, it was all Imoshima's scheme. His target was the patent held by Nami's father, and he aimed to steal it. Sold to the prison as a sex slave, Nami endured countless abuses, gradually transforming into a cold, emotionless woman.