While taking their usual bath, the boys discuss how much Kyotaro is like an old man. The next day, when they go to school, they find themselves exhausted by climbing up the stairs... and learn that they're all becoming old men!
That's right. What's causing this again?
صحيح. ذكّروني ما الذي يسبّب هذا؟
Dann ist die Ursache also …
Cierto. ¿Qué era esto?
Verdad. ¿Qué era esto?
Ce qui veut dire
que c’est à cause d’un…
Esatto. Cos'è che sta causando tutto questo?
Isso mesmo.
O que está causando isso?
Точно. Ещё раз, из-за кого это?