Was Earth actually another world?! A beast-eared yuri SF (a little bit strange). On the moon, there live 'rabbit people' who look just like Earthlings and possess an advanced civilization. They have incorporated the genes of rabbits, who prefer a regular and ordinary daily life, transforming themselves into obedient beings. What they ended up with is a society where all choices, from meal contents to minute-by-minute leisure activities, are entrusted to AI. In the midst of this, the rabbit girl, Uko (うこ), shouts, "Let me choose my own things!!" and leaps into Earth, where she meets the rabbit person, Hane (はね), who is exploring Earth. The two are bewildered, but…!?