Joousama no Shiro Usagi

Yukito Nishina, the only male in a household full of sisters, leaves home seeking tranquility. While at school, he spots an unusual object on the roof—a spacecraft. From it steps a girl wearing a crown, identifying herself as Princess Lacey from Planet Kura-ura. She explains she is looking for the "White Rabbit," a being meant to grant the wishes of ten people. Yukito is told he might be that White Rabbit.