Now, why did Sei lie like that? I know she lies compulsively, but that specific lie, sayin...

Now, why did Sei lie like that? I know she lies compulsively, but that specific lie, saying her brother is a murderer… also, why does he blame Woori for his mom's suicide? Nothing about it was the kid's fault… anyways, everyone is a diagnosis short of a happy life imo. Everyone is dying, let's get you some therapy