I think she lost her memories either bc of a deal with god OR (and this is even more outlandish, Mao had something to do with it). She dreamt of the fantasy world bc that's her memories being unsealed. Reincarnation feels like a plot hole or just really weak. for someone who went back to their world is a bit weird for her to die in that time spam and reincarnated into someone vs her aging to exactly what she would be if time passed normally.
I think she lost her memories either bc of a deal with god OR (and this is even more outlandish, Mao had something to do with it). She dreamt of the fantasy world bc that's her memories being unsealed. Reincarnation feels like a plot hole or just really weak. for someone who went back to their world is a bit weird for her to die in that time spam and reincarnated into someone vs her aging to exactly what she would be if time passed normally.