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Episode #1: The Demon Beasts seek to mate with human females to create a hybrid that can survive in Earth's environment. The only ones who can stop them are the agents of the Interplanetary Mutual Observation Agency!
Epsiode #2: The final phase of the invasion begins. The mating of Kayo and the posessed Tsutomo results in a horrible Demonchild that tries to creat an army of mindless warriors from Kayo's friends.