Thank you for writing such an entertaining story. I liked Aberforth a lot, and the way Harry's and Severus' summers were described so precisely and separately, before they could come back to Hogwarts. I find it weird that no one but Harry clued into Kieran's disguise. But, I suppose, it's all JKR and her constant vigilance thing, making it natural for us readers to suspect all and sundry. Also I must commend the level pace of the story, so steadily and consistently unfolding, never once jarred. I wonder where does the name Kieran come from. Strange name. Harry is very canon, I think, and Snape's a sweetheart.
Sorry if my comment is somewhat incoherent, - am sleepy.