Rui lives with her mother. Her mother is often sick and can't work properly. In order to help the household finances even a little, she begged her landlord to let her work as a helper. The landlord, who lives in a wheelchair, takes advantage of Rui's offer to "do anything" and demands not only personal care but also sexual satisfaction. She ends up doing handjobs, pussy licking, fellatio, and even raw creampie sex. As Rui does as the landlord tells her, she eventually comes to know the joy of being a woman and gradually succumbs to becoming a sex slave.
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