Curse of Anger

Second in Curses series, a collection of unrelated tales about the curse of humanity. Harry hates Snape, but one fateful meeting atop his parents' graves has Harry rethinking this. What curse has Snape cast upon him that has left him so bereft without the other man? SSHP, bit dramatic, but rated Kplus because the most that they do is kiss and Sev uses a wirty-dord.