Ahhh, I'm more of a Tohru x Kyou fan myself. ^^;; Though I do love cats.
Wait, what area of fanfiction are you talking about, silverdays? (I have a suspicion, but if I suggest it, my evil secrets will be proved. =P)
Sometimes you really do need OCs to bring the story along. It's just that when they become Mary-Sues and take over the fiction that they're wrong. ^_^