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?!

Volume 12 of the Mint Chocolate manga series by Amber Tamosaitis.