Sasami is the younger sister of Ayeka, and is probably the most sane of all of the girls. She's an amazing cook and befriends Ryo-Ohki instantly(well Ryo-Ohki is her pet in In Tokyo)! Sasami first meets the Muyo gang when she releases Tenchi from Ayeka's brig using her master key which looks like a lil trigger with the typical Jurian root pattern. Sasami was a stow-away on Ayeka's ship when she went looking for Yosho and she had no clue Sasami was on-board until she sees her after releasing Tenchi! In Universe, however, Sasami comes on a seperate ship looking for Ayeka. You'd think Tsunami, but NO! It's just a normal Jurian ship from the fleet. In Tokyo she comes again with Ayeka.
When Ryoko was attacking Jurai under the influence of Kagato, Sasami was killed. Well, not EXACTLY, Tsunami assimalated with Sasami so she could live! When Sasami grows up, she'll look just like Tsunami, although, Sasami thinks of herself as Tsunami's creation and not the real Sasami(don't get me wrong, she really is the one and only Sasami)! Sasami has a marking on her forhead that is called the Emblem of True Power or Emblem of Power, whichever! Whenever Sasami has a recurring dream including Tsunami the mark will glow. These dreams usually happen when she is seeing into the future--in a way. Sasami, In Tokyo, became good friends with Yugi, who inturn tried to spare her from being hurt when she attacked the Masaki shrine. Back to Universe for a moment, when the two gaurdians use their energy to resurrect the old Kamidake and Azaka, the two knights seem to follow her wherever she goes and Kamidake now thinks of himself as her apprentice. You see, he's hooked on video games and Sasami plays with him all the time and teaches him! Her parents are Misaki and Azusa.