I could have sworn I read this somewhere. Oh well, it won't kill. *reads again*
I like the portrayal of Seishirou in this. It's one of those greater mysteries in life -- what he's been thinking. Maybe it's simple, and he simply doesn't care who he hurts to get it, or maybe it's the only option left to him.
In any case, wonderful piece. ^^;
As for the Subaru/Subaru-kun? I think Subaru-kun would mar the elegance, if you will.