Rin is a beautiful girl who has tried compensated dating to save up money for studying abroad. Her first partner is a gentlemanly and kind middle-aged man. She trusts him and gets introduced to his acquaintances, and continues to engage in compensated dating. Each time they meet, Rin Rin more and more addicted to perverted and intense sex with the older man. His cock trains her into a lustful and lustful woman, both in Kokoro and body...