What about Kunimitsu?

Not only was she trying to steal Yoshi's sword but also she is accused for stealing for herself.

Well, hmm... if there was a female Manji ninja in Tekken, I would gladly welcome her. Maybe Yoshi's daughter? ^^ It would be so awesome! :)

Now as Yoshimitsu's sword loses power and he himself adapts to changes by extending his abilities, a Kuni-like character might be very welcomed. :)

Like Jun -> Asuka, there might be a female Manji ninja as well. ^^