Looking for a Harry Potter fan-fic where Harry runs away.
He tries to go to Hermione's but Snape shows up and it turns out that Snape is Harry's dad. Snape lives with Lucius as his head of family. Draco does not want to believe Harry is Snape's son; he calls Harry "scar head" and pushes him after Harry tells Draco what Draco's runespore said about him. Harry's accidental magic acts up and he grows a tree in the snake atrium. The snakes in the atrium room all belong to Draco.
He begs the adults not to punish them, and he puts up a shield wandlessly. Harry is an elemental emp or elf, maybe a Veela. There is spanking in this story; Draco's mom punishes Draco for his bad behaviour with a magical hair brush (it is not really magical she just tells him that so his pride is not hurt). Harry was abused by the Dursleys that is why he ran away. Harry has a flashback when Draco called him a freak, that is why his magic acted up; Harry has scars and Draco sees them.