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!
Kyotaro-senpai, you've gotten so square!
!كيوتارو-سينباي، أصبحتَ مربّع الشكل
Kyotaro-schenpai.
¡Kyotaro-senpai,
te has hecho tan cuadrado!
¡Kyotaro-senpai,
te has vuelto tan cuadrado!
Kyôtarô, tu es devenu si cubique…
Senpai Kyotaro, sei diventato così quadrato!
Kyotaro-senpai, você ficou tão quadrado!
Кётаро, ты стал такой квадратный!