RBD-243-UNCENSORED-LEAK A sickly mother's hospital bills push Mai Shirosaki into a pledge

Mai Shirosaki has a sickly mother and works day and night to pay for hospitalization. More misery falls on her when she signs a pledge in exchange for her mother's huge medical expenses. The neighbor laughs secretly, and that day he commits the sister next door. The story follows her descent into that arrangement.