The next morning - or rather, evening, as it was 6 PM - the girls and I decided to split up to conserve time. From now until 12 AM, one group of us would go to the Hunters' Guild to complete some quests, while another would go to the Library of Infinite Beginnings to challenge another floor, and tell the others what the Gatekeeper was like once they were done. After reconvening at lunchtime, we would then scout out the Ross Estate, and figure out what the button did once and for all.
I still hadn't figured out what exactly we would do for that matter, but there was still some time until then. I would come up with something...probably.