HBAD-333 - My stepfather's plaything, and mom just watches

Nana's father passed away 3 years ago, and her mother remarried, saving her from poverty and allowing her to pursue her university dreams. But behind the happy facade lies a nightmare: her money-obsessed mother ignores her, while her perverted stepfather constantly lusts after her body. To make matters worse, her mother discovers the incestuous relationship and chooses to turn a blind eye.