Right off the bat I want to say, that I heaven't played a single bit yet. I only browsed the menu so far.
I also want to say, that I'm really happy you released this sequel, despite everything that happened (I didn't check daily for the release, only a psychopath would do that) despite everything that happenend in NijisanjiEN. I can't say that I support the company anymore, but the fact that Niji doesn't make any money from me playing this, I'll just forget about them and pretend that all these characters are silly OCs :)
I'll write a full review once I am done, but from what I've seen so far (this page and main menu + extras section) it looks interesting and I'm interested in how the plot will play out. It definitely looks like a sequel and I'm eager to play it, once I have the time.