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!
Bragging about his old days as a bad boy.
يتبجّح بأيّامه الخوالي كفتى شرّير
Der ist ein typischer Alter,
der mit seiner wilden Zeit angibt.
Presume de sus días de chico malo.
Presume de sus días de chico malo.
Un vieux voyou qui vante
les exploits de sa jeunesse.
Si sta vantando di com'era birichino un tempo.
Falando sobre sua época de garoto levado.
Хвастается тем, 
что в детстве был хулиганом.