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 hard...
...كيوتارو-سينباي، أصبحتَ صلباً جدّاً
Kyotaro-schenpai …
Kyotaro-senpai, te has puesto tan duro…
Kyotaro-senpai, te has vuelto tan duro…
Tu es devenu dur
comme la brique, Kyôtarô.
Senpai Kyotaro, sei diventato così duro...
Kyotaro-senpai, você ficou tão duro...
Ты стал такой твёрдый, Кётаро...