An unstoppable alien armada is invading the Earth, and ordinary reporter Tetsuya is covering the action when he accidentally defeats the commanding princess Kaamu. Suddenly, she decides she is in love and wants to marry him! As if that were not enough for Tetsuya, the rest of the Empire, including Kaamu's father the Emperor, is not the least bit interested in a primate like Tetsuya or those verminous humans from having any claim to the throne.

Can Tetsuya, Kaamu, and their few friends keep the entire Empire from stopping the marriage?

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