A little worry is normal, probably, and Shinji gives Kyoko a similar quick glance, just to make sure nobody's going to find this too weird. It's fine, though, truly. Here, Kai, you get to have both of their hands in yours while they explore.

If it's just going to be an easy perimeter sweep to start with, they probably don't need to be consulting the map too closely, but Shinji will retrieve it to keep on hand. Just in case. "Let's go." Let's go!! On to hunt for fish and hopefully some answers!