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!
You just drift through life, 
doing what you feel like...
...تنجرف في الحياة، تفعل ما ترغبه نفسك
Wie der Wind wehst du
durch das Leben, total gleichgültig.
Solo vas por la vida
haciendo lo que quieres…
Solo vas por la vida
haciendo lo que quieres…
Toujours à se laisser porter
par leurs envies,
Ti fai trascinare dalla vita,
facendo ciò che preferisci!
Você apenas passa pela 
vida, fazendo o que quer...
Ты плывёшь по течению,
делаешь что вздумается...