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...
Popcorn kind of looks like 
brains, don't you think?
يبدو الفشار كالدّماغ نوعًا ما، أليس كذلك؟
Popcorn sieht irgendwie
wie ein Gehirn aus, was?
¿No creen que las palomitas
parecen cerebros pequeños?
¿No creéis que las palomitas
parecen cerebros pequeños?
Le popcorn ressemble au cerveau,
pas vrai ?
I pop-corn assomigliano a dei cervelli, non trovate?
Pipoca é parecido com o cérebro, né?
Попкорн ведь внешне похож на мозги.