At first, I thought that Nago Keisuke might be a mean guy, who wouldn´t like Wataru (and ther people) at all personally, but seeing them both next to each other sitting in the Cafe in the preview for next episode, I would even guess he is actually really some kind of Jekyll & Mr. Hyde, in person. Meaning, that he only turns cruel, if he is on the hunt. So, I would say that maybe, just maybe they would even become friends personally these three - Wataru, Megumi and Keisuke - but later get into conflict when not just Megumi, but also Keisuke is trying to hunt Kiva down.
I think, or hope, that it´s going to be a major part with lots of encounters between Kiva and Hunter. :buttrock: I hope they have a lot of fights! Even, personally, that would be great to see turn friends into enemies, when Keisuke and Megumi are confronted with their FanGire hatred in form of the rather innocent Wataru.
There is just one thing: They can´t see Kiva´s face, so nobody knows that it´s Wataru, right? But he is able to see their faces, so he also knows now that it was Megumi who tried to shoot him just now, doesn´t he? I guess, it´s going to be pretty hard for him, if he knows something, that they don´t.