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!
But it is different!
!لكن هذا مختلف
Doch, hat es!
¡Pero sí lo es!
Pero ¡sí lo es!
Si ! Carrément !
Sì che lo è!
Mas é diferente!
Мы сильно изменились!