Joousama no Shiro Usagi

Nishina Yukito has always been the sole boy in a household full of girls. Hoping to finally escape the chaos and find some much-needed peace, he moves out on his own, expecting a quiet and uneventful daily life. However, his plans for tranquility are quickly shattered when he witnesses something entirely out of the ordinary on the roof of his school. Resting on the rooftop is an actual spaceship, from which a mysterious girl wearing a crown steps forward. She introduces herself as Princess Lacey, the imperial ruler of Planet Kura-ura. The princess reveals that she has traveled across the stars with a singular mission: to locate a legendary figure known as the "White Rabbit." According to her royal decree, this fabled rabbit is destined to assist her in granting the wishes of ten humans. To Yukito's absolute bewilderment, Princess Lacey insists that he is the very White Rabbit she has been searching for. Thrust into an interstellar quest he never asked for, his dream of a peaceful existence vanishes completely, replaced by an extraordinary obligation to help an alien princess fulfill a cosmic prophecy.