My job as a private tutor has become a source of torment due to my relationship with Kotone. During lessons, she constantly tempts me with her immature yet alluring body. With mischievous eyes, she strips off her underwear and flashes a defiant smile every time class begins, completely dominating me. One day, pretending it was an accident, she touched my underwear and skillfully began to tease me with practiced moves. But her actions were more than mere playfulness—hidden between her and her father was a dark secret.