So apparently this was supposed to be the final chapter at first, but author immediately decided to go for a sequel? That's GREAT! Now there's gonna be more time for side characters, and conclusion for their stories, because come on, I love this series, but main characters are completely bland. They aren't bad per se, I don't dislike them or anything, but compared to the rest of cast they are just... around.
If this was a real ending, I don't think I'd be perfectly happy with it as it is... It's good, but somehow not conclusive enough. THANKFULLY, there are still 3 more volumes left!