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?
Goro-chan, you knew?
Goro-chan, du wusstest davon?
¿Ya lo sabías, Goro?
¿Ya lo sabías, Goro?
Goro-chan, você sabia?
Горо, ты знал об этом?