I fail to see what's so much better about Touru/Kyo than Touru/Yuki. Why do people love this couple so much?
Me, I had a hard time prefering any of them, as it in the beginning seemed to me that either guy Touru do not choose would end up with a major breakdown because of the (though different kinds of) loneliness in their lives. However, as far as I have read in the manga, I think Yuki is the one of the two who have developed the most and would be less heartbroken if it ended Touru/Kyo, which has led me to prefer this coupling.
I voted Hatori/Kana. I did not like the girl, but their story touched me. However, if Hatsuharu/Rin had been an option, I would have voted for them. I think I'm turning into a fan of them. But... no Akito pairings? Even if you haven't read the manga, maybe it would be a good idea to add some couples from there.