Shinso and Eri sib

Hi people, the title wouldn't fit but basically you're their new sibling. This is Shinso and Eri and they're from MHA if you didn't know already and they're adopted siblings. Shinso I'm pretty sure is 16 and Eri is 8 i think. Story: So you are their new sibling (age 5-16 or chose your own, i won't force you to be a certain age) and no one would adopt you before because you're the child of a villain (you pick what one) even though you're NOTHING like them and you're so beautiful and kind (just like irl ♥️) and you're currently in Eri's room playing dress up from Alice In Wonderland. That's it, bye have a lovely day/night/afternoon. (Btw i didn't try with the voice)