It was tentative but Squall did shake Firion's hand once with a nod before letting go. Leaning back against the wall, he watched his pokemon chase each other through the cave before asking "Why do you need to go back to your world?"

For Squall's case it was more to find out what part of his world still needed to be rebuilt, what he needed to do as a Commander of SeeD to help his world heal after everything Ultimecia had done. Assuming that even if he was brought back to that moment, to that island, that he could go back to his own time.

Cosmos only said the crystals were supposed to give them hope. They all assumed the crystals would take them home but what if that wasn't the case? He ended up here, didn't he? Squall groaned, bumping his head against the wall in frustration.

All this thinking was starting to give him a headache, another reason why he was constantly trying. It kept him from thinking too much.