Giving naive girls a cock-based lesson in discipline might seem harsh, but it's a reality check they need. Earning 10,000 yen per hour? That's not a normal job by any standard. It's cheaper than delivery health or soaplands, yet completely legal to have sex as part of the work. The appeal of this production lies in using a hard dick to teach sweet, innocent girls the harsh truths of life and the real pleasures of sex.