Your my Diamond (Nightmare x Smart! Caring! Powerful! Reader)

You were an ordinary girl, well so you thought. You didn't know that you had the power to talk to animals. You had a best friend named nightmare, you've known him ever since you were 5. But then your family along with you moved away. You thought when you see him again...He would be the same kind skeleton he was...but little did you know that you were so so wrong. You didn't know that he ate the dark apples on the tree. When you saw him again...you couldn't remember him. Mabey you're his only hope ...to bring him back to his normal caring and loving self and save him from the darkness that surrounded him.

none of the images are mine unless I say they are

this is my first story so sorry if it's bad but please no hate comments.