Okay! Time for a post solely devoted to the one scene that Jack and Koh had, because I feel like it says a lot about the way their relationship has changed.
So, Koh shows up out of the blue(why is he even there in the first place?), to tend to the nosebleed Jack is being dramatic about. Jack is resistant at first:
But he fairly quickly relents:
Though he's definitely whiney about it
And then! Then Koh turns on the charm
We've never actually seen either of them intentionally flirt with the other. The closest we came to it was when they exchanged flowers, and that was spur of the moment and not entirely intentional. This, however, is clearly something that Koh is doing deliberately.
Jack is still openly resistant though:
But then things get even more interesting:
And here we run into the problem of them not having enough scenes together, because this can be taken a couple of ways. Either they're going to play video games together, and Jack doesn't want to change that, OR, and this is where my eternally strapped on kink goggles come into play(heh), Jack is playing video games with someone else, and Koh somehow has acquired enough power over him that if Koh told him to not play video games with someone, Jack would obey. This theory is, I think, somewhat aided by what happens next:
Jack becomes instantly accommodating, with a "thank you" and a seemingly eager offer to wash Koh's handkerchief. Where did this behavior come from? We've never seen him act like this with Koh before. Ugh, why can't they have more scenes?!
Anyway, then there's this part, and I feel like there's got to be some word play going on that isn't getting translated, because I'm a little lost as to his meaning:
I have no idea what he means by this. But it clearly means something to both of them:
I've run out of my Tumblr allotted photos for this post, but Jack shakes himself out of it, says "What nonsense are you spouting?", and Koh laughs.
So, it appears that Koh has become the seme, and possibly the Dom, though whether they turn out to actually be kinky remains to be seen.
I really, really wish they were the main couple.