Umibe no Usagi

is a Japanese light novel series written by Suzu Suzuki, with illustrations by Yu Katase. The series began publication on March 10, 2004 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
The world of regular hexahedrons divided into cross sections-the fragment world Court Island. Immediately after the rumbling that shook the whole world, Yuto, a girl who was an apprentice controller, picked up a young man at the beach. The young man, whose clothes, hair and skin are all white, does not remember his identity or even his name. He was named Rabbit because of his white body and crimson eyes, and decided to act with Ute for the time being. However, the two witches, Irene and Catalina, are involved in a battle over a mysterious rabbit.!?