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!
It's odd. I feel like... 
I'm getting even older...
...هذا غريب. أشعر وكأنني... أزداد كِبَراً
Irgendwie fühle ich mich
immer älter und älter …
Qué raro. Siento que…
me hago más viejo…
Qué raro. Siento que…
me hago más viejo…
J’ai comme l’impression
qu’on continue à prendre de l’âge.
Che strano.
Mi sembra di stare invecchiando ancora...
Isso é estranho. Parece...
Que estou ficando mais velho...
Странно... Я как будто
ещё сильнее постарел...