JWP trained wrestler who came to Mexico in 1989 to win the newly created UWA Women's Junior championship. The title was brought back to Japan and unified with JWP's own Women's Junior Championship later that year. Yuu vacated the title via injury, but the titles were apparently defended together thru the end of the promotion. It doesn't appear this title was ever mentioned in Mexico again.
Yamazaki was only billed with the Ninja name in Mexico.