For all of the lack of romance in their relationship, it seems that Yuuta and Rikka are at least destined to spend a day of their school field trip together to enjoy some time as a couple - an event made even more likely by Nibutani's pre-occupation with the mysterious web site purporting to be hers which is, as it turns out, not another of Dekomori's stunts after all.
But, of course, we can't