Cielxreader my blossom (completed)

(Y/n) had a bad past with her family and the only friend she had was her demon butler Zack. They were the same age and the best of friends. Zack new that (y/n) was being beat and he did his best to help.

It's now 1 year later after a tragic accident the death of her mother. He dad had then changed.

What will happen when she is saved by a young rich noble. And what will happen when they grow feeling for each other but a certain someone get in the way and makes a evil plan to kill (y/n) .