Kiriwo’s dream: To make a world where all demons would be equal, even if they didn’t have that much magical powers. Iruma completely agreed with this statement, so he proposed they shoot for the grand prize at the Battler Party. If they’re able to get the grand prize, everyone, including high-ranking demons, would see how hard Kiriwo and the Magical Apparatus Battler worked. All the Battlers are getting their presentations ready for the Battler Party on the day of the Party Eve. But suddenly, the fireworks shell that Iruma and others prepared suddenly goes missing...
We don't know for sure that 
it was Senpai who took it.
،لسنا متأكدين بعد أنّ السينباي أخذها
Es muss ja nicht der Senpai gewesen sein,
der es mitgenommen hat, und außerdem
Puede que no se llevara la bola él.
Puede que no se llevara la bola él.
Rien ne prouve
que ce soit lui qui ait pris la bombe.
Non è ancora confermato che li abbia Kiriwo,
Não está confirmado se ele levou mesmo.
Мы ведь не знаем,
правда ли он унёс снаряд.