Kingdom Hearts Birth by Sleep: Volume 2 unveiled in Final Mix secret ending

Square once again fails to understand the meaning of the word "final."

KH13.com's discovered a teaser for something called Birth by Sleep: Volume 2 buried within Kingdom Birth by Sleep: Final Mix. We say "something" because, well, we're not really sure what it is yet. It stands to reason that Square's birthing another PSP game, but for now, we've just got a bunch of teenagers with swords for hair and keys for swords mumbling ominously in Japanese.

From what we can tell, however, Volume 2 looks to be bridging the seemingly wide gap between Birth by Sleep, Kingdom Hearts 1, and Kingdom Hearts 2. Check out the teaser for yourself below. Oh, and just in case you've been sleeping on Birth by Sleep until this very moment, SPOILER ALERT.

Thanks, Joystiq.