Akane Kazoe was brought up in a conservative family that had limited knowledge of sexuality. Despite her excellent entrance exam results, Akane was naïve about anything that was remotely provocative. In contrast, Suguru Hanazono grew up in his family's sex shop, and his parents educated him about sexual matters from an early age, with an intention of ensuring that he would have a healthy relationship in the future. One day, Akane approached Suguru, showing an eager desire to learn about sex, starting with the concept of the male reproductive organ. Suguru willingly took on the task of mentoring Akane, guiding her gradually in the matter of sexual education.