Mint Chocolate Manga Volume 12 features story and art by Mami Orikasa.

Don’t you dare go anywhere. New family crisis alert! When Nanami tries to help a little girl who strikingly resembles Suzumura, she happens to catch a glimpse of the kid’s mom—who has, like, the exact same face! And so, Nanami and Andou launch a secret investigation, but Suzumura finds out…and learns the parent who abandoned him might have been under his nose the whole time. And could he possibly have an actual biological sister?!