It's not my fic, but it is so epicly awesome you have no idea.
It's a Snape-adopts-Harry genfic, but seriously, it's a lot more than that. This has to be the best work of HP fanfic I have ever read. And believe me I've read a lot. xD
It is A Year Like None Other by Aspen in the Sunlight. That portion of the series is 97 incredibly long chapters. The sequel is A Summer Like None Other, then the one after that is A Family Like None Other. The story is still going with AFLNO at chapter 17 and counting. Updates take a long time, but they're well worth it. Besides, it will take a few weeks just to read through what's already there.
In case you're interested, here is Aspen's LJ account in order to keep track of updates.
Clicky!
Honestly, please read this fic. It is completely amazing. I promise.
