Decades ago, Sei was raped and gave birth to an unfortunate child, but she raised him with a sense of responsibility as a single mother. The mother and daughter lived peaceful lives, forgetting the past, until one day, her daughter Rei came home with a serious look on her face. Sei was cleaning when she saw a shadow behind her... a familiar tattoo on her hand. The rapist appeared in front of her again and defaced her. Apparently, he had obtained her home address when he "violated" her daughter...