The Last SaiyukiSaigo no Saiyuuki , 最後の西遊記

Returning from school, third-grader Ryunosuke is introduced to a young girl. His father tells him that she will be his little sister starting that day. Her name is Koharu. She is blind and her arms and legs are prosthetics. She holds within her a power beyond human understanding... A bizarre and fantastic Saiyuki story for a new generation!