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!
It's my fault?
أهي غلطتي؟
¿Es mi culpa?
¿Es mi culpa?
C’est ma faute ?
Sarebbe colpa mia?
É minha culpa?
Почему сразу я?