This year, Ryō, a repeat student aiming to pass into a prestigious school, decides to have his sister-in-law, Mei, who is highly educated, teach him. He had always thought of her as unattainable, but now they are alone together. Her large breasts, soft body, and pleasant scent... all of these stimulate Ryō's desires, making it impossible for him to focus on studying. Concerned about Ryō, Mei proposes to help him lose his virginity... A dream come true for a virgin like Ryō, to be taught sex step by step by a high-spec beauty who has both talent and looks!
