Kyoko Akizuki

Kyoko Akizuki is Nobuhiko's younger sister, targeted a number of times by the High Priests as her lifeforce could awaken Shadow Moon. At first she was not aware of Kotaro being Black until she was abducted by the Birugenia and saved by him. Once Nobuhiko emerges as Shadow Moon, she and Katsumi are terrified of his new appearance as she eagerly refuses his offer to join him in making a new world without violence. After the defeat of Black at the hands of Shadow Moon, she and Katsumi left Japan to start a new life abroad.