Riku is an outstanding university student with the talent to win awards at art exhibitions, but the town factory run by her father goes bankrupt, making it difficult for her to even pay her tuition fees, let alone make a living. Struggling with the thought of entering the world of compensated dating to pay off her parents' debts, she is invited by Odagiri to a high-paying part-time job and visits the Tawara estate... and thus begins her awakening to bondage and perverse love.