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!
did you know that the first bath of the 
day is the most dangerous one for seniors?
هل تعلم أنّ أوّل حمّام في اليوم هو
أخطر شيء بالنسبة للكبار؟
que les vieux ne doivent pas
prendre leur bain en premier ?
entrare per primo in vasca 
è molto più pericoloso per un anziano?
você sabia que o primeiro banho do dia
 é o mais perigoso para os mais velhos?
вы знали, что пожилым людям
опасно мыться первыми?