With Matataki still absent from school and shutting everyone out, Umika must find a way to get through to her. But first, they decide to enlist help from a familiar face...
If you don't know, 
then you've just got to learn!
!إن كنت لا تعرفين، فتعلّمي كيف فحسب
Was man nicht weiß, muss man lernen!
Si no lo sabes, aprende.
Si no lo sabes, aprende.
Il faut continuer d’essayer !
De fabriquer et de lancer !
Se non sai una cosa, basta impararla!
Se você não sabe, é só aprender!
Если не знаешь — учись!