Born as a dark executioner to eradicate evil from society, Erika maintains her strength by keeping two household sex slaves for daily training, developing deadly techniques, and perfecting her ability to crush testicles with a single kick. She is ruthless during sexual maintenance—forcing her slaves to lick her genitals until she's satisfied, violently beating or making them eat feces whenever they slip up, maintaining absolute control over them. At her mansion, she relentlessly whips her slaves into shape, while outside she spends her days punishing criminals.