I'm looking for a fic, and I really need help
In the fic Harry is adopted by this woman(cannot remember her name) and he becomes an dark, elf-like, creature. He becomes allergic to artifical light(such as wand light), can use shadow(travvel in it, use it to attack etc.), he litteraly glows in moonlight and Severus Snape is his mate.
Harry's 'sister' comes to teach at Hogwarts, Draco Malfoy spends a lot of time with her(he is in loove), and we are told that when the sister was younger she was almost enslaved to Lucius Malfoy by the use of a ritual. Their spicies are feared beacouse of their powers.
that is all I remember, so if you know which story I'm talking about please drop me an answer. Pretty Please?*puppy eyes*