Instead of forgetting all and choosing a new leaf 704 chose revenge and from what I understand all of your human memories gets wiped out when you became a grim reaper that's probably why Geumsun acts so annoyed with 704 in the current day
not annoyed, i think geumsun was in pain seeing 704 in that state because he was still in love with yunhwi
He just ACTS annoyed but yeah he is probably in pain
Instead of forgetting all and choosing a new leaf 704 chose revenge and from what I understand all of your human memories gets wiped out when you became a grim reaper that's probably why Geumsun acts so annoyed with 704 in the current day