Anastasia Riddle -My Life before Hogwarts:

After being abandoned as children, young twins, Tom and Mattheo Riddle were found in the forest and brought to an old and terribly lonely orphanage. Once turning 11 and getting their Hogwarts acceptance letter, their lives took a turn for the better.
...
Unknown to all, a forgotten Riddle was left in the woods to fend for herself. Found by Lillith Slytherin, her life was even more tortured than the twins. Unknown even to Dumbledore, Anastasia never got her Hogwarts letter.
Until now that is.

Draco x Anastasia (main character)

Trigger warning: anti hero main character (just a heads up) swearing (not often and only when used when needed)