*giggles* of course they upendo eachother! hun, listen, Maria is shadows sister okay? think about it, Gerald used maria's dna to help him make shadow so technically that makes them blood relatives! right?
Shadow and Maria have friend Relationship. They don't have a romance feel since they don't know how to filtre and also,are too Young. They are not related,between an hedgehog and a human... Gerald created him to research the mortality and Maria was the first person that Shadow met and make him the happiest.Maria has an incurable disease and have to be in the ARK.