Severus Snape is sent by Dumbledore to check on Harry after it is discovered that he may be in danger. Despite their differences, Snape helps Harry through a rough patch in his life. AbusedHarry/GuardianSnape. Summer after GOF.
When Harry comes back for his second year at Hogwarts, Snape discovers he had been abused over the summer. A tougher, more in-character Snape than my other story. While Harry stays with him over Christmas break, the pair goes on an adventure together. Not Slash. Might not be guardian either, but really just a little drabble.
Severus Snape saves Harry from the grasp of Lord Voldemort and his death eaters. They go on the run until Harry is strong enough to conquer the Dark Lord. Might be slash later, not sure. NO HORCRUXES / POST-HBP.