Kei was an underclassman of Kamui Fujiwara when he attended art school. At some point she fell in love with him and gave birth to his [[Kamui's children|child]]. On the night of April 9th, 1999, she was planning to meet a group of men with her female coworkers. The men worked for an elite company, so she was well-dressed. She was lured away to the [[Babylon Shopping Center]], believing she was to meet Kamui, but in reality she was being targeted by [[Ayame Shimohara]]. At Babylon she met [[Tokio Morishima]], and lit his cigarette for him. She told him he may be "just like her". Shortly after, Ayame murdered Kei with a customized harpoon gun, and hollowed out her chest with a sharp blade. Tokio believes he may have witnessed the murder, and remembers hearing her ghost call for help in his head. Ayame then left her body on the glass roof of the mall, framing the murder to make it appear that Kamui had committed it, while she hid him in her studio [[Gladiolus]].

Kei was an underclassman of Kamui Fujiwara when he attended art school. At some point she fell in love with him and gave birth to his [[Kamui's children|child]]. On the night of April 9th, 1999, she was planning to meet a group of men with her female coworkers. The men worked for an elite company, so she was well-dressed. She was lured away to the [[Babylon Shopping Center]], believing she was to meet Kamui, but in reality she was being targeted by [[Ayame Shimohara]]. At Babylon she met [[Tokio Morishima]], and lit his cigarette for him. She told him he may be "just like her". Shortly after, Ayame murdered Kei with a customized harpoon gun, and hollowed out her chest with a sharp blade. Tokio believes he may have witnessed the murder, and remembers hearing her ghost call for help in his head. Ayame then left her body on the glass roof of the mall, framing the murder to make it appear that Kamui had committed it, while she hid him in her studio [[Gladiolus]].