In the future, an app debuts that can simulate your romance with a partner of your choosing and calculate the compatibility score. Is this a way to have a romance that never fails? What is it that people look for in a romance anyway?This series has adult situations and some explicitness, but not the level you'd usually expect from LEN[A-7]'s other works.Author website: http://zoal.jp/Pixiv: https://www.pixiv.net/en/users/59958Twitter: https://twitter.com/LENA_Anana