Hmm, and from what I've seen Serena mention, this Hibiki also had a lot of research material to do with Z-ARC. Adding that onto what you've experienced with him before and what Wintyr has said to us, I think it's obvious that he feels the world should've ended with Z-ARC and isn't happy that what actually happened didn't fit with this so called 'prophecy' he believes in.

So now, I guess, they want to bring back Z-ARC and end the world according to that script.