I really like the pose and the attention to detail. Well done! You said in your thread that you'd like critiques, so here goes:
Before you upload something like this, you should re-size it and ink it. If you only have the pencil version, just wait until you can find time to ink. I had to copy and paste this into a paint program and re-size it to take it all in at once. By resizing you'll allow your viewers to see the piece as a whole. Inking will give your piece more presence. It's difficult to see all your detail work with such a light pencil mark. If you don't like inking, try using a softer pencil lead, like 4B.
As far as anatomy goes, the neck is too long and the arms and legs are too thin. They aren't proportionate to the rest of the body. The muscles on his arm aren't placed correctly, so I suggest googling some images to use as anatomy references. His shoulders should be slightly broader, also.
Again, you did great detail work, but sometimes we get lost in the details and fail to see the piece as a whole. For anime characters in profile, the space between the bottom of his nose and his upper lip should be smaller. I also recommend drawing the shape of the head/skull before drawing hair, because you've made his skull a bit small.
The hands are very well done, but the hand that isn't holding the keyblade may prove to be an error in design. It doesn't serve a purpose in the drawing and the position is a bit stiff. Why is he holding his hand out? Maybe draw a paopou fruit in his hand or something to give it purpose. If not, simply let it fall to his side so that it flows with the serene feeling of the piece. You could also open his eyes and perhaps draw a little Tinkerbell floating in front of him to make it seem as if he is conversing with her. That'd work quite nicely.
The keyblade is great. You did a FANTASTIC job on it, perspective, proportion, and all. I do have to point out that the chain at the end of it is swinging even though Sora is holding his arm still. Again, this could be solved if you added a little Tinkerbell because then, presumably, he'd be gesturing while he conversed with her.
I hope you don't think that because of the length of this crit that I'm not impressed with this piece. I truly am, and you should be really proud of this. I can't wait to see it when it's colored and finished! I hope that my crit was what you were looking for. Thanks for hearing me out and being mature and open to criticism. Please PM me when this is done so I can see the finished product. Great work!