Yuina Miyazato, a high school freshman, declares herself Nanao Kyan's most devoted fan, profoundly inspired by Nanao's taiko drum performances in her band. She channels this admiration through relentless enthusiasm, often bypassing queues of supporters to reach Nanao faster. At each encounter, Yuina offers homemade cookies. Her recipes fuse spicy ingredients into sweet dough—a culinary signature she fiercely champions, undeterred by Nanao's visible distaste for the flavor pairing. When a bag of these cookies vanishes, Nanao registers no concern, but the spirits stealing them endure an abrupt, fiery aftermath upon eating.