[action]
[Good point. Jaeha must be feeling bad about being locked up again...]
I have been told that sometimes people return after being in their world, with their new memories. It's really confusing, I know, I can't really wrap my head about it. But everyone is completely sure about it.
[His words make it clear that he has doubts about it too. But if Yona was taken from the time she was taken from, then who had they been travelling with? They would have known it wasn't their Yona. And besides, they had arrived the same day. It didn't make any sense at all and it greatly frustrated him.]