Mizuto and Yume go to a summer festival in the countryside of the Irido family. Yume's tension explodes when she sees Mizuto wearing a yukata. Seeing the exchange between Madoka and Takema, Yume says, "Siblings are normal," taking Suito's hand and walking away. I learned about Mizuto when I was a child. And Yume notices. She wondered what kind of existence she was to Mizuto.