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...
It makes Mommy sad.
That's what Pappy told me.
.فذلك يحزن ماما. هذا ما أخبرني به بابا
Meine Mami ist auch traurig darüber.
Das hat mir mein Papi gesagt.
Hace que mi mami esté triste.
Eso es lo que me dijo mi papi.
Hace que mi mami esté triste.
Eso es lo que me dijo mi papi.
Maman serait triste,
Questo rende triste la mamma. 
Me lo ha detto papà.
Isso deixa a mâmi triste.
O pápi que falou.
Папуля мне сказал,
что мамулю это огорчает.