Her boyfriend is her sadistic master...!? Or is he really a sweet, kind master...? Yuka is the personal maid of the handsome, young entrepeneur Takahiko, for whom she feels unrequited love. She lives peacefully with her calm and gentle master... or at least she did, until one day disaster struck. Since then, her master transformed into a sadist! He bites her breasts and penetrates her from behind... "Do as you're told. I'll discipline you thoroughly." She has a rough time, surrounded by violence, but her body accustoms to the indecency... A never-ending sex life of sweet and painful punishment... Can she ever confess her love!? from Renta!