One day over summer break, Goro and the team run into Katsuhiko, twin brother of Yokonan's Yoshihiko. What does his arrival at the school mean for Goro?
Don't let it go to his head! Go on.
Wir können den nicht
damit davonkommen lassen.
No dejes que se le suban los humos.
Que no se crezca más.
Fais-lui fermer son clapet !
Não deixe ele ficar se achando. Vai!
Вперёд, не дай ему возгордиться!