Before the game was released SNK held a contest in Japan to select one lucky girl who would voice Kyo's girlfriend: Yuki. The contest lasted a whole day and included talent events and stuff like that. Now, where in the hell can you find Yuki in the game talking? In the special ending you get if you play with the "Weapons of God" team (Kyo, Iori and Kagura) She appears in a b&w picture at the end and says a line....
The Korean version of the game has one noticeable difference: All Japanese voice samples are muted. So any phrase, special move, or victory quote that's in Japanese is just silent.