I quite like Kami; an Oni girl with the moveset of Nightmare is up my alley, and though it's a bummer that she ends up being lost to time, I'm glad she's able to find peace with Algol. Too bad she nor Shura hasn't appeared in the series since this. I know they're meant to be exclusive to this, but it would have been really nice.
I rewatched this for reason now that Soul Calibur 6 is coming in a month, Since Groh serves Aval Organization which perhaps Algol is the one who found this Organization, And (Even though it's not canon) Kami becomes Algol's soulmate, Doesn't that make Kami his Queen and perhaps Groh serves them both?
Honestly, this is the one bonus character from this game that I wouldn't mind seeing in future titles. (It would be nice if she had her own moveset though)