This section is dedicated to the girls (and women) that have affected Touya and Yuki's relationship in one way or another. It was originally going to be just about Sakura... but then I couldn't resist.
(BTW I didn't forget the fact that Nakuru doesn't really fit in here.)
Aside from Sakura and Nakuru, there will be sections on Kaho, Youko and Nadeshiko. Of course, Nadeshiko doesn't directly affect the boys' relationship, being dead already... but Touya is such a mama's boy that I can't leave out his okaasan. (Besides, if you stop and think about it you'll realize that she does, because Touya had to let go of her in order to keep Yukito at his side).