Disappointing. It truly felt as if they had exhausted all their ideas and stretched the story far beyond its natural conclusion.
Simultaneously, on numerous levels, it presents a very dissatisfying ending. We are left completely in the dark about how Akari, Touya's father, or any of the other secondary characters are faring.
Moreover, the grand final battle concludes on a rather downbeat note, and even the bonus chapters seem to do little to alleviate the bitterness that lingers.
It's a real letdown considering the potential that the story had earlier on. One can't help but feel a sense of frustration and disappointment with how it all wrapped up.