A beautiful high school girl with a 100 million-point ass grows into a full-fledged sex slave through a shady wall-assing part-time job! This time's applicant is Yui, a beautiful D-cup girl who's so cute she probably has a bad attitude toward society. Before she can even understand the situation, her soft ass is forced into a hole in the wall and restrained with chains. Suddenly, men start concentrating on her clitoris, which is said to be an erogenous zone! Do you want to quit your part-time job now? You can't go home. They lick and smack her oil-covered beautiful ass...