Tsumugi’s started elementary school, and it’s one new experience after another. She’s excited to try the all-important school lunch, but she’ll have to get used to some new rules—eating at school isn’t like eating at home. Then, the ability of sandwiches to mend a broken friendship is put to the test, even as Kotori braces herself for an important decision. Finally, it’s time for Tsumugi’s first athletics festival—her world just keeps getting bigger!