Kazu grew up in a strict family, always being the good student and the good girl, innocent about all sexual topics. Hanazono, on the other hand, grew up in his parents' sex-toy shop, and was brought up to be open-minded and knowledgeable about the subject. So when Kazu wanted to learn more about sex and all its details, she knew exactly who to ask!

Note: The author has continued to post a number of epilogue chapters to her personal Pixiv and Twitter pages.