
I don’t think that is possible because in the epilogue at the end of season 2, the author said the first couple will start with someone new, rather than the same old one like the second couple.
One more evidence for this theory is that Daegeun indeed didn’t have the memory from when he was in the medieval era, so yeah. It kinda sad you know... he already reincarnated, but like his experiences in his new life makes him a totally different person, it is painful for the seme to have to watch his love one die and trying to raise his love again and again... it’s not the kind of happily ever after that I wanted, but it is so real that I am cool with it
First couple... even if Daegeun reincarnated, he is not the same person... it just hurts... author at least give him a full 100 year life span before parting them away... even a timeskip would have been better than this abrupt death... it hurts so much I can’t take it anymore