To get the now-childlike Mona onto their team officially, G-Wrench and the team visit league registration. It's revealed that Mona can use a Fight Burst, but doesn't remember how to do it. As Kara's suspicions grow, Professor Pi's team Q.E.D. challenges them to a match.
First, The Final Digit... Q.E.D. arrives!
!أوّلاً، العدد الأخير... "كيو إي دي" يصل
Auf der einen Seite,
The Final Digit, Q.E.D!
Primero, The Final Digit,
Q.E.D. aparece.
Primero, The Final Digit,
Q.E.D. aparece.
L’équipe CQFD, alias le Théorème
de la Victoire, apparaît la première.
Partiamo dall'ultimo teorema per la vittoria!
Primeiramente, entra em cena 
o Teorema Absoluto... o Q.E.D.!
Первая команда —
Финальная победная теорема, «Ч.Т.Д.»!