Tytania is a Japanese novel series written by Yoshiki Tanaka that has not been concluded yet, with the latest volume being released in 1991. It has been adapted into an animated television series directed by Noboru Ishiguro. It premiered on NHK’s BS-2 satellite channel on October 9, 2008. The series is a space opera based on a series of three books written by Tanaka between 1988 and 1991 about people who try to liberate the galaxy from the rule of the Tytania-clan and seek refuge with a rebel force.