The Build Divers decide to participate in a Battle-Random mission in which the matchups are randomly determined. Their opponent turns out to be a force called Hyakki, which includes Do-ji, against whom Riku won his first victory, and Ogre, who gave him his first taste of defeat. Riku's heart pounds with anticipation at the idea of assessing his growth by taking on Ogre, using the strength he's accumulated through his previous experiences. Meanwhile, Do-ji's own heart burns with desire for revenge.
I've never been in
such a large-scale battle!
!لم أخض معركة واسعة النطاق كهذه من قبل
So eine riesige Schlacht
sehe ich zum ersten Mal!
¡Nunca vi una batalla tan grande!
¡Jamás vi una batalla tan grande!
C’est ma première bataille
à grande échelle.
È la prima volta che partecipo 
a una battaglia di questa portata!
Nunca estive em uma batalha
de tamanha magnitude!
Впервые участвую в такой масштабной битве!