So I was looking through some anime sites and stumbled upon this article. Upon reading it I found something pretty interesting, though I don't have complete faith in it. I looked around and found a Japanese website article saying the same thing. For those who don't want to find the text it says:
I don't know, but I love the sound of this.. Aschente!
At first I was gonna say S2 confirmed, then I remembered how many times Irregular was joked about in anime. Then again,Madhouse ins't exactly known to make that many jokes about the past projects so...
Mmkay, I'm hoping that this makes it at least possible for a S2.