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!
I feel like I've aged sixty years in a day.
أشعر وكأنني كبرتُ ستّين عاماً في يوم واحد
Ich fühle mich schlagartig
60 Jahre älter!
Siento que envejecí 60 años en un día.
Siento que envejecí 60 años en un día.
Comme si j’avais pris 60 balais
en un jour.
Mi sembra di essere invecchiato
di sessant'anni in un giorno.
Parece como se eu tivesse
  ganho 60 anos em um dia.
Я как будто постарел на шестьдесят лет.