Mint Chocolate manga volume 12 features story and art by Mami Orikasa.

Nanami sees a person who looks like Suzumura's mom, who left him behind seven years ago—and she even has a five-year-old daughter named Koto! Nanami and Andou decide to investigate while keeping it a secret from Suzumura, but he finds out at the worst moment imaginable! Could this be the crisis that breaks up the family!?