Blue Gender

Blue Gender is set in a near-future world after a catastrophic event that led to humans being displaced by the Blue, a species of insect-like extraterrestrial beings. Humans have established a space station called Second Earth as a refuge, hoping to one day reclaim their home planet. Cryogenically frozen Yuji Kaido is thawed out and joins a team sent to retrieve him, but their mission is complicated when they're attacked while trying to return to Second Earth.