Maybe they'll still fight each other. I've heard that in the original story that this manga is based on, the final battle was
. If they do the same thing they did in this previous arc, by absorbing the losing teams, the next matches will follow the orinal poem's composition. That's the theory anyways. Also, in the original poem, the winner seems to be
. I've never read the original, but that's what I gathered from talking with people about this.