Since both of them have their memories from the past, they're the same people in the new life too. Only the physical damage wasn't done yet but mentally, both of them are fucked.
Let's look at like this. We still don't know how and in which condition they got another life. The story started w the MC knowing everything he did. Now we don't know when or how he got his memories back we'll prb know later. But for both of them their "new" life isn't really new cuz every situation and outcomes were the same. Sejin being an orphan and ending up in an abusive family. So it's not really like their "new" life is meant to reach new goals or smth. We don't even know how the MC died. It could have been that he died right after sejin and went back to same time so that'd mean he's the same person he was.
you have a point but past ido's action has traumatised sejin to the point he still got unexplained nightmares in his new life. Not to mention ido himself acknowledge his past life so i dont think anyone has any reason to decide sejin was wrong for getting mad at him. in fact i think sejin could get more mad atp
I understand it’s a whole another life and all but he’s mad at him for something “he” didn’t do it was another life him it seems wrong for him to be mad at him because it wasn’t him. Know what I mean?