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?
What I must do is simple.
Was ich tun muss, ist klar.
Lo que debo hacer es sencillo.
Lo que debo hacer es sencillo.
J’ai qu’une chose à faire !
O que preciso fazer é simples...
Моя задача проста!