Well, everything went well. Kinda disappointed to see how those events that led up to Mahiro losing his cool at Nyaruko were just a setup, but even if they weren't, it would've led up to another kind of cliché where Mahiro make it up with the riffraff à la your typical love comedy. Meh~
My thoughts on Haiyore! Nyarlko-san:
This is a show that's set out to make audience lose their sanity points. From the onset, it looks like it has anything and everything but common sense, and naturally it's a type of comedy that isn't for everyone. In short, it's an out-and-out comedy, or so it came off looking so. But just as I feared, the whole nonsensical theme kinda wore off quickly, and although the parodies still kept pouring in, it kinda lost steam fast. Worse, it gradually turned into a run-of-the-mill love comedy that's a dime a dozen.
It's a 6/10 for me. It would come as no surprise if it gets a second season -- especially when the series' material (i.e. parodies) is always doable since parodies are "reusable" as long as there are other shows continuously -- but I'm doubtful if I want to follow it. It's not like it would have something different to offer, me thinks.