Responses
There's an error because Eunha's soul wasn't supposed to be in Raeliana's, that's why eunha remembers her past life. Her soul is supposed to be in Beatrice but since the Original Raeliana used Dark magic they got exchanged.
spoiler or not just my theory
so mc, in guessing, lived three lives the one she remembers, her current one and one where she was Beatrice? idk I was thinking maybe the first life was either the first raeliana or Beatrice but everything makes me confused