I... Love this. I love that story and I love this. I can't think of any other words besides LOVE. I even have tiny tears forming in my eyes.
The second drawing was my favorite bit (I mean, Harry with big hair? Young prim Snape? It's so comical and cute, it brought an instant smile on my face)... and then I saw the next drawing, and the next. The last really tugs at my heartstrings.
I also liked how Harry's thick glasses were prominent in the third and fifth. It almost made me wonder if the glasses and the books were visual links between the pictures, but that doesn't seem to be the case at all.
Still, beautiful work. Quiet and quirky and sad in turn. Great work.