#request 799

I’m looking for a post war fic where Draco is a ghost at Hogwarts. (I believe Harry has returned as a professor). I remember they spend a lot of time in Harry’s room. They eventually fall in love and brew a potion that makes draco kind of human so they are able to touch each other. I think it takes a long time to brew the potion they and become obsessed with it. In the end Narcissa has preserved dracos body so they are able to bring him back. The fic was on ao3 (I believe between 100k-200k)