Yume attended the Jurai Science Academy at the same time as Washu Hakubi. Yume graduated second in their class with Washu ranked first. Unlike Doctor Clay Yume was actually considered by Washu to be a legitimate rival whose intelligence was worthy of respect. In addition to their intellectual competitions Yume also engaged in drinking contests with Washu at a bar near the Academy. After one of these contests shortly before Washus capture by Kagato the highly inebriated geniuses agreed on a contest to see who could conquer the Jurai Empire first with the loser becoming the winners slave. While Washu passed out afterward and promptly forgot about this wager Yume dedicated herself entirely to winning the competition. She created three powerful warriors the Shima Brothers to carry out her plan and stole the 2ndgeneration Jurai royal tree Bizen. Yume then placed herself in suspended animation to wait for them to acquire the Jurai Book of Secrets which contained information she needed to control Bizens powers. from Wikipedia