Are you a fan of Nori and Yomi's relationship? I don't really know any other manga's that fits your description and I think that is why I kind of liked this manga a bit. Have you ever watched Clannad or 5 centimeters per Second? Those anime's are couples do not do violence to each other and there relationships are touchy and strong.
do you know any manga like Ga-rei? With a naive male meeting a pro female in an otherworldy fight and the characters pretty much building their relationship in the series, without the usual arguing and instead caring toward each other like Kagura and Ken-chan. i'm tired with the usual Tsundere and their denial of each other's feeling
Cool. Glad you saw the series. Some people that reads only the manga doesn't understand Yomi's character so I'm glad you understand her position in things and why she is important to Kagura. I think if they didn't introduce Yomi in the first arc as one of the 1st bosses people wouldn't be so irriated about her coming back to life story.