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On a planet where only females are born, Alice, a timid girl, and Momoka, a tomboyish girl, are close friends who dream of becoming a couple and traveling to the promised land of "Eden." In their society, girls aspire to undergo a transformation into males to pair with their destined partner and gain passage to Eden. The two share a strong bond and hope to achieve this dream together. However, an unexpected incident causes Alice, not Momoka, to undergo the transformation. This shift challenges their relationship and sets them on a path to confront the mysteries surrounding their world and their future.
