[Obviously Jason doesn't see them disappear since he didn't see them to begin with, but he gets a sense for it from Ignis' face alone. He frowns, but otherwise does his best to keep his expression neutral, masking his concern. He steps closer towards the trees, putting a hand on the tree and peering up into the branches like any of that would tell him anything. He sighs and steps back.]

Maybe it's something else then. I hate that we keep blaming the spirits for things, but I guess they're kind of the unknown factor around here.

[There's a pause and he looks back in the direction of Bonfire Square.]

Unless it's a new arrival...someone we aren't aware of with an ability that could do that.