@Shinyan if you read the story it’s explained subtly, it’s understandable if you missed it but basically when someone in the royal family gets a personal knight they seem to do a tradition that’s referred to as imprinting, or a specific part of the ritual of sorts is called imprinting. Basically since this is a reincarnation back in time she takes the male lead and imprints, aka making him her personal knight which eventually sets off the start of her new future. (This isn’t really a spoiler since it’s in the first couple of chapters and can probably easily be misunderstood or looked over so that’s why I’m not putting spoilers on it. Plus even if it is technically a spoiler it doesn’t hold too much weight on being a spoiler to the point I have to put a spoiler on it)