As a little girl, Komomo Ninomiya delighted in picking on Natsu Azumi, the son of her family's pastry chef. Ten years later, when the family fortune is lost and she has no place to live, Komomo encounters Natsu again in her hour of need. Now that Natsu is a master pastry chef in his own right, he'll help Komomo-but only if she works for him at his new confiserie!
Komomo attends her first festival by working in the Méli-Mélo food truck. Natsu keeps snubbing her in front of Noelle Étoile, an entitled rich girl who became attached to him when he lived in France. Komomo realizes that Natsu must be in love with Noelle, but why is Komomo so upset by it?