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Mizuki (Guest) contacts Ena, who is participating in the Kamiyama High School festival, asking if they can talk for a moment after the event. Even as the festival day arrives, Mizuki worries that their decision might change the relationship with the circle members forever. Carrying these anxieties while trying not to show them, Mizuki enjoys the festival with the 25-ji, Nightcord de. members until the end. To reveal their secret to Ena first, Mizuki heads toward the rooftop—the place where they felt connected to everyone and where Ena once promised to wait. However, a small incident in the classroom causes Ena to arrive at the rooftop first. While waiting, two male students come up and start gossiping about Mizuki in front of Ena. One of them notices Ena and strikes up a conversation. Just as Ena, wishing she had left earlier, tries to give a brief response and escape, one of the boys—hearing that Ena has known Mizuki for a long time—asks, "Are you a guy too, hanging out with Mizuki?" unintentionally revealing Mizuki's biological sex. While a flustered Ena freezes for a moment, Mizuki rushes onto the rooftop only to witness the expression on Ena's face upon learning the secret. Stricken by the shock of having the secret forcibly exposed, Mizuki flees. Ena chases after them, her mind still a mess. After a pursuit through the school corridors, Ena finally catches up to the fleeing Mizuki. But all that awaits her are Mizuki's tears, screams, and an apology filled with resignation.