Very unique story. I like Harry going back in time and saving Severus not only from Moony but also from Nagini in the future. I like Hermione and Ron's relationship. I also like that they add to the story and don't take over the story.
Snape is very bitter and sarcastic and I like that. The stray thought Harry had while kissing Snape? Priceless and dead on. He's so clumsy when it comes to romance.
The story was well-paced and creative and I enjoyed reading every word. :-)