Riku was an outstanding university student with exceptional talent, having won awards at art exhibitions. However, her life took a turn when her father's small factory went bankrupt, leaving her unable to pay tuition, let alone cover daily living expenses. Burdened by her parents' debts and contemplating work in the nightlife industry, she was approached by Odaoki about a high-paying part-time job and visited Tabyu's mansion. Through the experiences there, she awakened to the world of bondage training and began walking a new path in love.