Well, I have no idea, lol. I'll just have to Google it later.
I was just sad about Nakiami . . . :C (plus all those guys that got killed and everything . . . but whatever, lol, Nakiami's more important. xD) Poor Ishizu and Yango. :C
That part was a bit off, but I believe he came back to life. I think this because, when the Harukan Prince tells him that he will forget who he is, Akiyuki says something along the lines of how he will wait for the day that someone calls his name and lets him remember . . . and behold, nine years later, Haru talks to the stone (although I would have thought she'd been doing that all the time . . . ) and he remembers who he is.
BUT I guess I can't really be sure, lol.