Yukito Nishina, the lone male in a household of females, left his home with the desire for a serene existence. Unexpectedly, he witnesses an odd occurrence on the top of his school's roof. A spacecraft and an enigmatic girl wearing a crown appear. This girl, who goes by the name of Princess Lacey from Planet Kura-ura, asserts that she is hunting for the "White Rabbit." According to her, this rabbit must assist her in granting the desires of ten individuals. To Yukito's surprise, he is the one she believes to be the rabbit.
