Demon Child - Yandere Batfam x Neglected Nezuko Reader

When you're whole family is slaughtered and you are left as the sole survivor, you find yourself on the doorstep of the infamous Wayne manor. Despite having grown up with a loving father, it turns out he wasn't your real dad. Now under the "care" of you're real father, Bruce Waynez your family dynamic changes as you cope with the trauma.
However, your new family isnt as welcoming or accepting as you thought they may be.

They never thought their abuse and neglect would go this far, but here you are. After being revived you haven't been the same. In some ways you're the same girl they remember, in other ways, you've become almost demonic.