Ooooh, I really liked this fic. Really, really. It was such a story. We got to travel to China, catch a glimpse of the inner workings of the Auror corps, enjoy a nice slow build up, and slowly piece together just how Snape survived the snake bite and what the fall out was. I think the pacing was my favorite part of this story; josan didn't skimp on the details but managed to constantly keep me interested in the story. It just gives me chills to think of all the little bits that popped and sparkled.
One caveat for die-hard Snarry fans: this fic is Snarry-lite. The character development is phenomenal for both men, but their relationship is more about confronting the past, forgiveness, and getting reacquainted than it is about creating a future. This is because (spoiler and another caveat) Snape is dying. This isn't sad, in the fic, but it does limit the possibility of a future, obviously. I am very not into character death, but I promise it's more of a release in this story than it is about death and grieving.
Also, one of the best original characters ever.... I loved Mei Pei!
I mean, what do you really need to say about a fic that contains lines like this: "all Snape's ideas about intimacy shattered and reformed just on the tip of Potter's tongue."
But.... there's lots of other things besides the hot sex! *g* (Occasionally I can pay attention to things other than porn...) Delta includes a wonderful original Muggle character, whose house Snape and Harry borrow while Snape recuperates from a curse wound. The constant interaction of magical and Muggle worlds is charming, as is Miss McGill's alternating wariness and fascination with the men under her roof. And, unsurprisingly, it only takes her hours to see what Severus has missed for years. Don't we love Severus?
There is a nice level of tension running throughout the fic, caused by Snape's injury and the constant miscommunication between the Professor and Boy Wonder. This keeps the readers off-balance, always anticipating the next little surprise.