Kuro's classmate Aona is troubled by the popcorn that keeps popping out of his head. Aona says it makes him sad when the popcorn disappears, so Ramune lends him a bag that can be used to store the popcorn. Why is Aona's head producing popcorn, and why does he feel sad when it disappears? Ramune tells Aona that the treatment method will become clear if he asks himself those questions...
So, have you figured out why 
you're producing popcorn?
إذًا، هل عرفت لماذا تنتج الفشار؟
Und, hast du mittlerweile herausgefunden,
wo das Popcorn herkommt?
Entonces, ¿ya averiguaste
por qué produces palomitas?
Entonces, ¿ya averiguaste
por qué produces palomitas?
Alors, tu as compris
pourquoi du popcorn sort de ta tête ?
Quindi, sei riuscito a capire 
perché produci pop-corn?
E aí? Descobriu a causa da pipoca?
Ну что, ты понял, почему из тебя
выскакивает попкорн?