I can't actually see Junno himself being arrogant. maybe moody (being him an AB XD), but arrogant... I can't even imagine him playing an arrogant character XD even Bidou was cute in his own way XD /bricked

Well, we know Hotta's spending habits are luxurious, haha. xD
This is such a Kameno-ish hidden hint, y'know? XD

Then I hold on my answer about the "baka" issue after I've watched the episode :P