A demonic space criminal called Kain has escaped from prison, demolishing the Galaxy Police Headquarters, and threatened to eliminate Jurai by hunting down Tench’s mother when she was a school girl in 1970. To ensure his existence unthreatened, Tenchi Masaki and his posse of beautiful woman friends must travel back to when his mother and father were at school before Kain’s malevolent scheme could commence. More on Wikipedia or Mubi
Watch Tenchi the Movie: Tenchi Muyo in Love (1996) Japanese Manga Film
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Adult Animation Film