Thanks to his diligent parents hiring a private tutor for Arthur, study sessions brought new pleasures into A-chan's life. He was delighted by the kind and attentive tutor, who guided him with care. Between lessons, they spent time playing together, and gradually, A-chan became increasingly fascinated by his tutor's voluptuous figure. Drawn to her attractive body, he began using health class and sex education as an excuse to grow closer to her, slowly deepening their relationship.