Katsumi Kida

Katsumi is Nobuhiko's girlfriend, like Kyoko she is not aware of Kotaro being Black himself until Kyoko tells her the truth about Kotaro. Once Nobuhiko emerges as Shadow Moon, she was also terrified of his new appearance. She assists Kotaro quite a few times to persuade Shadow Moon to remember his human-side. After the defeat of Black at the hands of Shadow Moon, she and Kyoko left Japan to start a new life abroad.