"Ah, you just looked..." He tries to find the right word. "Lost."

Which is understandable, given the situation. Especially when it's this Jack's first time being kidnapped by other dimensions. Akito doesn't expect him to share any insecurities since, to him, they're still basically strangers. It hurts, but having the chance to be friends with Jack makes the hurt easy to ignore.

"I... Nobody really knows for sure. I think it's because whatever moment in time they were taken from their original worlds, they get sent back to that exact moment and so, to them, they never lived through any of it."