Gosh, let's be optimistic.
One thing I always hope to see (but never do, sadly) is the seme finally waking up to smell the coffee. A partner who has an extreme disinclination to be in a serious relationship is bad news all around and is good only for the sex-friend bracket. Once things start getting serious on the seme's part and the uke is still the same loose way, it's time to let him go. Relationships like those are never healthy. And, oddly enough, I always think about the actual health aspect that goes along with these promiscuous ukes (because a lot of times, they do it raw). Well, that's because I like my manga to be realistic (I do make room for semi-logical as well lol)
Meh... I'm not as enthusiastic about this manga as I want to be. (The art is really pretty to look at which is a major factor to why I'm still reading this)
Right now, I'm not complaining too much. A promiscuous uke and a somewhat perverted seme is fine. They have both agreed to stay in the boundaries of being sex-friends. But as with themes similar, shit is going to hit the fan soon. I just hope it doesn't turn into those typical half-ass plots where the uke sleeps around with a ton of other guys because he is afraid to fall in love then suddenly realizes that the guy for him was in front of him all along.... -.-