I see a lot of Kanami x Yume and I'm not sure why since they never really interacted. But I'm not really complaining.
They're both battle-crazy sword nerds who would totally get along, have sparring sessions, and nerd out about sword stuff together if they had the chance to be together more often... which sadly, due to what happened in the anime, they didn't. Plus Yume is cuter than that toothpaste eater Hiyori.