[It isn't a lie to say that he's embittered towards purebloods in particular. Of course he has every last right to be so. Maybe it's because of what Yuuki ultimately was. Or that he also knows how to abide by the rules which are set up by the Association (and, yes, what once was the senate). In the here and now, though, he knows what he feels. He isn't so extremely genocidal towards them (and all vampires as he once was.]
Yeah. Sure.
[Ai and Ren will likely to want to help as well. Even though a part of him wants to be the one who prepares everything (not that it's to show off. . .)
Haruka really doesn't waste any time at all. However a part of Zero assumed he would have brought up that man in a general sense, opposed to jumping right into who Ren is.
He knows he needs to be honest. Working his way around Ren is only even more difficult. It's much to late for Zero to claim that he's another one of his brothers.]
Yes. He is. So far as he's told us, too, is he's from rather [extremely] far into the future. Much more so than Ai is.