Stepfather sexually harassed his stepdaughter

Minami Aizawa's father died early and her mother was still young, so after a while her mother remarried a certain man. Minami doesn't have sympathy for him but still has to act cheerful to make her mother happy. Then, after living together for a while, his stepfather showed his true colors. He continuously harassed Minami. Loving her mother, she persevered and ended up being fucked continuously for days in shame.