"We are heading back already? What about Onyx and Aurora? Weren't they getting dragged back to make a presentation about the dungeon?" It wasn't strange that Gil was confused about this. He had been told exactly this when they had been on their way.
Alice herself had mentioned dragging them back with a song of binding light that she had written if she absolutely had to. Just the idea of Alcie doing so made it clear to Gil that she had been writing more and more songs to be ready for a battle. Just a single that made chains out of light while she sang did not make him feel comfortable.
Since she was always writing, he knew that Alice was trying to come up with more involved songs too. Just the songs that gave people boosts to their speed or to their strength had been made in to different levels of song. Some which gave weaker buffs that were easier for people to handle. Others that were much more powerful for those who had the strength and control to use them.