I haven't been able to find it, but I think the author's name is A lovely complex. There was a story on ff.net, but its gone.

There was this fic I want to say it was called "Suteki Da Ne" or something close to that. That had Kagome as the 5th mate of Sesshoumaru, sold off basically by her parents. When she's younger she met him and mistook him for the god Kanon. Kikyo, Sara, Kagura and Yura are his other mates. Kagome's in love with Hojo who's a daimyo's son and high-ranking soldier. And the last chapter I read had Kagome tending to Sesshoumaru's wounds after a battle against Kouga when he made some remarks and untoward actions toward Kagome... I did a search on ff.net with no luck. So if anyone knows where it could be lurking I'd appreciate it.