No Need for Tenchi! Vol 1

The Gang's All Here! All your favorite characters from Pioneers hit anime series No Need for Tenchi! have crowded into one volume of action, comedy, and two-fisted romance! The trouble and fun all began when ordinary teenager Tenchi Masaki inadvertently released the legendary demon Ryoko from his grandfather's shrine. Turned out Ryoko was actually a marooned space pirate! Since then, she's become Tenchi's unwanted houseguest, attracting a host of other troublemaking alien women: Ayeka, a haughty alien princess; Sasami, her mischievous little sister; and Washu, Ryoko's mad-scientist "mother." Add Ryo-oh-Ki, an adorable little carrot-eating spaceship, and you've got one full Shinto shrine! Now Tenchi's troubles double-in the form of Minagi, a dead-ringer for Ryoko, who attacks our hapless friends and then conveniently develops amnesia. But Minagi is just a pawn of the alien warrior Yakage, who plans to steal Tenchi's miraculous sword and abduct Ayeka. And the only hero who has what it takes to rescue the kidnapped princess is...Ryoko?!

Source: Anime News Network Encyclopedia