Uzuixhinatsuru dzieła

(my AU:Mirabel isn't 15 like in the movie but is 17,pls understand this is for the sanity of this book,bc if i shipped mirabel as her OG age with the other character it's a AdultxKid ship and i don't like those ships cuz tbh who does?so she will be 18 during this book) What if Mirabel was dating someone that was not in the encanto that no one in the encanto not even DOLORES knows about,What if she ran away with him to japan to be happy,and what if the guy she was dating was a demon slayer?Would the Madrigals accept him into the family or not for taking Mirabel away from them?How will they react when they find out she isn't only dating a guy but 2 other ppl as well? Characters do not belong to me nor does the image for the cover