So I've thinking of this manga but I can't find it anywhere, so the fl get reincarnated in the body of an empress who is madly inlove with the Emperor but the Emperor hates her also he as a concubine, the fl as red hair ans in one of the episodes where concubine is supposed to explain something from her planet(she came from Earth) the empress come in with a red dress with a slit, I really like this manga but I totally forgot the name of it
So it's a manga where one the daughter of tge empror get executed (he burns her tongue I think) and she reincarnate as the child of the enemy of the empror
Should be “Into the light once again”
This one maybe?
https://www.mangago.me/read-manga/into_the_light_once_again/