@Hannie I mean that in the present time, Chaejun and Seunghyeon both don't remember each other from when they were kids. But Chaejun was remembering some moments but not fully. But then the uncle told both of them that they already met in childhood but Seunghyeon was confused and Chaejun was confirmed that the memories he was remembering is real.
@Hannie It's the backstory they are showing us, and I think Chaejun remembered everything in the last chapter released of the present time where Chaejun was in a similar situation of being stuck in a storage room and he was in a phone with Seunghyeon. That's when his trauma was triggered and he remembered everything(probably) and passed out.
