Kizuna Shishioh was the mother of Guy Shishioh and wife of Leo, and was one of the astronauts on board the manned Jupiros-5 mission to Jupiter. Although she and her fellow astronauts were thought to be killed in the expedition, her spirit was saved by The Power, a force emanating from Jupiter, where she was held in suspension between life and death. She attempted to communicate with her son through his cybernetic eyes, but could only make contact when he was in space. Furthermore, the images were distorted, and resulted in Guy's visions of the Three Sisters.