Another amazing chapter. You have a very poetic way of writing, and I like how you write in the present. It really makes it more poetic, raw, and real. I liked how you managed to weave in some humor through the conversation between Sirius and the Sorting Hat, but still managed to keep his thoughts and feelings apparent. This chapter was incredibly telling about the expectations that are broken. The way you set this up, too, helped. In the beginning, the weights are being piled upon him as his mother lectures him and straightens his clothing, and though he isn't listening, he realizes what he, as a Black, should do. The fact that Regulus was paying more attention than Sirius also was a good detail you slipped in. Then, as he walks into the hall, so sure that he is a Slytherin and so sure that those expectations must be lived up to, that is such an important part because it shows that he has basically understood that his name has basically thrown a carpet down in front of him that he is expected to walk upon, to a predetermined destination. But as he steps off that carpet and onto the ground, sorted into Gryffindor, you did an amazing job of showing how intimidating they seemed, when one would imagine Slytherin to be more intimidating. That really portrays his upbringing because he has much of a different viewpoint. You also did a good job of showing a certain prejudice against his sort, and how he not accepted anywhere, anymore. The scenes with Lily and James were very good and imaginative, and you managed to slip Remus and Peter in, too. I liked the way you showed how his parents actually did mean something to him, and how their disappointment would hurt him; that really gives an explanation for some of his bitterness in later years.
You did a good job showing the Gryffindor house and its differences with Slytherin, and what he expected. You also managed to slip Regulus into it again, and show that Regulus eventually would gain his parents favor, as Sirius was the rebel, and he was their follower. Amazing job, once again. It's almost like reading poetry.