Still in the countryside visiting relatives, Yume and Mizuto head to the local summer festival together. In high spirits from getting to see him in his yukata and seeing how Madoka and Chikuma interact as siblings, Yume boldly takes his hand in hers as they walk around the festival stalls. During their outing, Yume begins to get a picture of how Mizuto was as a child. And in doing so, realizes just what his meeting her meant to him.
It's my responsibility as your
 older sister to keep you close.
من مسؤوليّاتي كأختك الكبيرة
.أن أبقيك قريبًا منّي
Es ist meine Pflicht als große Schwester,
auf dich aufzupassen.
Como hermana mayor, debo cuidar de ti.
Como hermana mayor, debo cuidar de ti.
Une grande sœur se doit
de veiller sur son petit frère.
Tenerti vicino è una delle mie responsabilità
da sorella maggiore.
Se o irmão mais novo se perder,
a culpa é da irmã mais velha.
Долг младшей сестры — 
следить за братцем.