The last of Ranma's fiancées to appear, Ukyo is the victim of a childhood crush gone horribly wrong. First, she made a Childhood Marriage Promise to Ranma that he would end up forgetting about (not that he knew what he was promising at the time -- and then he ended up accidentally sabotaging the promise in the first place), and then, when her father and Genma apparently made an Arranged Marriage... but then Genma stole her dowry and ran off with it, leaving her behind. Believing Ranma had been in on it, Ukyo swore revenge and began crossdressing as part of an elaborate vow, tracking Ranma down with the intent of making him pay for deceiving her... only to discover it had all been Genma's fault, and Ranma was never even told about the engagement. Between this, the fact she was still in love