You write really well. Your characters are fairly coherent and well defined.
Your Harry, for exemple, is really well depicted. He definitely is the product of his early years and makes for a poor human being. He may be very bright and powerful, but he's going to have a lot to learn to get into the human race.... little things such as empathy, love, etc...
I really wonder where you are going to take him. Keeping him like that, you are going to make him like a future Voldie. Or maybe you are going to humanize him and make him more in touch with others, that could be interesting as well...
Thanks for your story.