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...
Mom is in the hospital 
because her heart hurts.
.أمّك في المشفى لأنّ قلبها يؤلمها
Weißt du, Mama wurde ins Krankenhaus
eingewiesen, weil ihr Herz wehtut.
Mamá está en el hospital
porque le duele el corazón.
Mamá está en el hospital
porque le duele el corazón.
Ta mère est à l’hôpital
parce qu’elle a mal au cœur.
La mamma è in ospedale 
perché le fa male il cuore.
A mamãe está internada porque
está com o coração apertado.
Мама в больнице,
потому что у неё болит сердце.