I really do love how he's just a knight, I think I was getting fed up of grand dukes, princes, kings, emperors, high ranking egoistic jerks. He's just a down to earth, sweet, and mature knight.
Yeah, why would they need a Savior that can't do anything but charm the Prince? I mean no Savior is better than her.
Also...does no one find it weird at all that there's this powerful, orphan magician in the middle of nowhere, with apparently no income but surviving just fine? Of course, this place has an eternal Winter...so maybe weird cafe in the middle of no where with one customer and striving isn't weird at all.
EDIT: Random thought...but could the other Savior actually be like a 7 year old child or something? I mean, she did get her "ideal" appearance. Maybe she's just some 7 year old child fantasizing about being a beautiful teenager and finding her Prince. Because Prince seems so casually drawn and forgettable...unlike let's say healer friend (who's a cutie)