What Did You Eat Yesterday? manga volume 15 features story and art by Fumi Yoshinaga.

A hard-working middle-aged gay couple in Tokyo experience new challenges both at work and at home. While Kenji struggles to adjust to his new position at the salon, Shiro has unexpected conversations with his parents about the future. Concerns about weight gain also lead to an overhauling of their long-established Christmas menu. In this volume, we see Shiro and Kenji themselves start to get on in years as they come to enjoy the simple joys of healthy home-cooked meals.