This year, Ryō, a high school student aiming for a prestigious university, is tutored in studies by his brother's high-achieving and beautiful wife, Mei. Being alone with a woman he once considered out of reach, he can't help but be captivated by her large breasts visible even through her clothes, her soft body, and her alluring fragrance. These things ignite his desires, making it impossible for him to focus on his studies. Concerned for Ryō, Mei suggests a hands-on sex lesson... A dream debut for a virgin, learning the ropes of intimacy from a high-class beauty who seems out of his league!