A married couple lose their wedding ring - which gets picked up by a teen prostitute in the slums. She wants to sell it and use that money to start fresh but, as it turns out, that won't be as straightforward as sucking dick.
Yukito, being the ambitious fucker he is, applies to be a domestic servant at a mansion. The landlady tells him he can only get the job if he masturbates in front of her. He gets the job.