Disclaimer ofc this is just what I got from the ending, it was rushed, but still can be explained, assuming that the author didn't plan the ending to be like that (as in the sisters), these are the possible explanations :
1. Lisha was hidden from birth (doesn't really make sense but hear me out) because of their mother's family's pressure, one of them would definitely become an experimental subject, Lisha was chosen because of her ability.
2. Libertia and Alisha are twin sisters, but when Libertia sent Lisha to another dimension, only she could remember about her twin sister, the others had their memories tweaked because of some side effects of sending someone to another dimension or Libertia was the one who erased their memories about Lisha. When Lisha woke up and Libertia's soul was already gone, her hair color changed because Lisha's soul had 'sync'ed with Libertia's body.
Everyone was probably confused about her hair color, but they were more focused in Lisha. When Lisha woke up, the people's memories about Lisha was unlocked, it's as if Lisha was living quietly in the palace or in her maternal family's house, then Lisha explained to her closest friends and family that she's actually in her sister's body (or the full story)
3. There might be translation mistakes with the name (or the author made a mistake) Lisha is the name that Libertia used to name her puppy, I assume that she was actually talking about her twin sister's nickname instead of hers, so the 'Beauties' had always been calling her 'Lisha' instead of 'Litia'
I do like him, especially because he can be cool sometimes (for Anya) and I like how he tried to do his best so Anya can come home to Yor, but he's a bit too creepy, I hope through his relationship with Chloe he could let Yor go (even though I know characters like him could not marry or be in a relationship with anyone unless he changed)
It would be kinda cute tho if he instead be a doting uncle (not in a creepy way)
Just to be safe, I tagged this as a spoiler warning. Not too long ago, I heard a real life story really similar to this story, so there was a couple in their early forties or late thirties who didn't have any children even though it had already more than 10 years since they first got married. During the marriage, she got belittled and insulted a lot for being infertile. The husband divorced the woman (if I wasn't wrong he had a mistress before divorcing her). The husband married his now wife not too long after the divorce and the new wife was younger than them by a lot (in her twenties) but they still don't have any children yet.
The woman got married to a man older than her, the new husband was a widower and already had grown children by the time they got married so the woman and her new husband live for each others (go on dates, vacations), he treats her like a queen and a few months into their marriage (maybe even almost immediately) the woman got pregnant. They now live happily ever after. (Basically how this manhwa is going)
Honestly, I love this real life story and Navier's story because I have followed this manhwa and novel for years, I have always loved Navier so much and seeing how the story is progressing, I'm glad that on a fateful day I picked this manhwa up.
I want more of Taiyo being a badass husband and Mutsumi being a badass wife and more of them flirting, Taiyo has come so far, just him alone can protect Mutsumi now