Tenchi Muyou! Toukou Muyou

With so many beautiful alien girls living in his house and constantly getting into chaotic adventures, it feels like the only peaceful moments Masaki Tenchi has left is when he's at school. That is, until they decide to enroll! On the same day though, there's a transfer studentー a mysterious blue-haired girl named Tsunami. Although they've only just met, he can't shake the feeling that he knows her from somewhereー who could she possibly be? At the same time, the "Coquettish Bombers" (a group of three Bounty Hunter girls; Sakaki, Ibara, and Kinoko) are traveling to Earth on the suspicion that the infamous Space Pirate Ryouko is there! By the time the day is over, will Tenchi's peaceful school life be left standing? Moreover, will his SCHOOL be left standing!?

Tenchi Masaki was a normal 17-year old boy until the day he accidentally releases the space pirate, Ryoko from a cave she was sealed in 700 years ago as the people thought she was a demon. In a series of events, four other alien girls show up at the Masaki household as Tenchi learns much of his heritage he never knew about and deal with five alien girls who each have some sort of romantic interest in him.