Yuuko Kamishiro

Yuuko Kamishiro (神代 悠子) is the heir of Kamishiro Enterprise, and the leader of Zaxon.

Appearance
Yuuko is a woman with shoulder-length black hair, black eyes, and a small chest. Yuuko's hair is cut in a way that resembles two staircases in the back. She wears a black and white dress with long sleeves, a gray zipper in the collarbone and a white ruff on the neck. The dress is mostly black and has a white part designed as if it was another strapless, backless dress. At the dress's bottom part, the transition from white to back resembles two staircases on the front and two in the back. She also wears black goggles with gray lens and white straps with a black line in the middle on her left arm, a black pantyhose, and gray shoes.

Description
Yuuko talks with a low voice, rarely raising it. She also loves food.

Etymologies
Name used in Digimon Story: Cyber Sleuth.
 * Yuuko Kamishiro (神代 悠子)
 * Ja: Kamishiro (神代). Japanese surname that means "ancient times" or "age of the gods". Possibly a reference to, creator of the in  and.
 * Ja: Yuuko (悠子). A Japanese feminine name that means "quiet child". Also similar to Yūgo. May also be a pun on "yūgohan" (夕ご飯), as Fei calls her "Yūgo-" when she's using the Yūgo avatar, and Yuuko loves food.

Fiction
Yuuko meets Aiba in the Central Hospital's lobby. Yuuko is talking to a nurse, and then takes the elevator soon after the two see each other. They meet again at the ICU, and she asks what Aiba is doing there. After Yuuko sees Aiba's true body in the ICU, she mistakes the digital Aiba for a sibling. When Rie Kishibe arrives, Yuuko tells Aiba to hide. Rie and Yuuko talk, the latter surprised, as she thought Rie wouldn't show up that day. Rie assumes Yuuko is hiding her "lover" in the next room—where Aiba is hiding—and opens the door. After Rie leaves, Yuuko wonders where Aiba went to.

Later, Yuuko goes to the Kuremi Detective Agency under the alias Yuuko Yamashina (山科 悠子), and is surprised to see Aiba. Yuuko claims her father to be Makoto Yamashina, and that he is missing, and requests help to retrieve his EDEN account. After Aiba retrieves Yamashina, and the teen, with Kyoko go to Yamashina's house and find out his only daughter is Chika, Kyoko calls Yuuko to the agency's office to give her the news. As Yuuko leaves, Kyoko asks her to use her real name next time, and calls her Yuuko Kamishiro.

Yūgo
Yūgo (ユーゴ) is an avatar based on Yūgo Kamishiro. Yuuko uses it when acting as Zaxon's leader. Many Hackers believe Yūgo and the Ghost of the White Boy are the same person.

The Yūgo avatar was given to Yuuko by Rie, and she first used it in Avalon Server.

In the "Yuuko and Yūgo" quest, when Yuuko decides to delete the Yūgo account, Yūgo starts acting on his own. He sends the girl an e-mail telling her to meet him in Avalon Server. After Yuuko and Aiba arrive, Yūgo reveals he is a program with a "virtual personality", and starts questioning why Yuuko wants to delete him. sides with him, as he thinks "Yūgo" is his real Partner, while the program notes seems to have chosen Yuuko.