Blue Gender

Blue Gender (ブルージェンダー, Burū Jendā) is a 26-episode anime created by Ryōsuke Takahashi (of Armored Trooper Votoms and Gasaraki fame) broadcast in Japan from 1999-2000. Blue Gender was created by the Japanese animation studio, AIC and is distributed in the United States by Funimation Entertainment. In 2003, Blue Gender was released on American television as part of Cartoon Network's Adult Swim, though it had originally been planned for Toonami, and was thus edited to remove its graphic violence, nudity, and sex scenes (however, its airing on Colours TV and Funimation Channel in the United States and G4techTV Canada in Canada were unedited and uncut).

Plot
Yuji Kaido was diagnosed with a serious disease and cryogenically frozen. He wakes up more than 20 years later--and Earth is nothing like what he remembers. A race of alien bugs called the Blue have taken over the planet, and a few select humans have retreated to the space station Second Earth. Yuji is taken back to Second Earth, where he learns that he and the other sleepers will be instrumental in defeating the Blue. And his relationship with one member of the recovery squad only serves to complicate things.