She is the
daughter of Kurokouchi Sakon, the mentor of Ukyo.
Her skills with the sword art is far greater than Ukyo's. But for some
unknown reason, she was kicked out from her fathers house. She was picked
up by Gaoh and gave her a new reason
to live. Now she serves under Gaoh and will do anything for him. She killed
Shodown 5 Special, Samurai Shodown 6
Yumeji is clearly
a sprite clone of Ukyo, and was cloned after a sprite that was
nearly 8 years old.
After reading her story it makes sense why she's a clone
design, but still... some clone designs are just hard to accept. Even so, she
can pass as a "cool" design, but she definitely doesn't have make
unique animations of her own... and it appears she's got Shang
to morph into other characters during her special moves (yet another 'cheap'
thing about her design).