Her real name is unknown, though she asked to be referred to as "匿名希望" (tokumei kibou, lit. "anonymous hope") in the Japanese version of the game, and as "Jane Doe" in the North American localization. Despite that, her character card calls her "黒" (Kuro, lit. "black").
She does not have a unique design, rather, she simply uses the regular Black Feather model with shortbrown hair. Whether or not any Black Feather is specifically Kuro should be determined from context, such as:
being presented in conjunction with Akemi Homura, or the holiday of Valentines,
