I asked of the Rozemyne twin sister au because I just got an idea, if she was born with a twin that is not an isekai but a normal kid, not sickly just like Tuuli and Kamil?
Rozemyne is still herself, not changing anything about her, but little twin sister of her would be absolutely a sweetheart, not bratty, healthy and just a delight to be with. She doesn't have that crazy mana, she runs around like any happy child.
They wear same attire, so it's sometimes a bit hard to tell them appart.
When Myne(I am calling her before she became a noble) started being that apprentice priestess, her twin sister would still follow about, be she never disrupted her lessons, she can be easily distracted playing with any commoner toys Myne had ever crafted for her
Totally switch places when Myne is so tired, which is weird to the adults. Ferdinand in specific, because once the girl he's talking with no longer has intense mana and is acting heavily childish without talking in big words and the huge incognitve: She's not babbling over books! She has the same face but is acting totally different and she is not fainting at all.
When pinched on the cheeks she bursts into tears, which obviously panics Ferdinand or Benno whoever is with the twin.
When OG Myne comes back and acts the same, she is so confusing everyone thinking if she has a double personality or something.
Some thoughts of what has been in my mind, just wanted the idea of Rozemyne having a twin sister who is vastly different from her and confusing everyone as hell