She is now cremated and has her gravestone on the mountains in Yamanashi Prefecture alongside John where she and Yuuji used to live. Asako was a tall and attractive woman who usually wore her dark-blue hair in a ponytail and dark-blue eyes. Her usual attire consisted of an A-shirt that is white at the piece at the back of her neck to the top of her bust. She also wore black pants and black boots. She has been seen wearing her blue jacket over her shoulders. Asako was both harsh and sweet, capable and competent, and drilled many of her own values into Yuuji Kazami.
Thanks to her job of bringing him up, he can at least act normal, but now possesses a strong wariness for the horrors of large women.
She was also completely and utterly incompetent at cooking as she couldn't even make fried rice. Asako wasn't particularly different from Yuuji; she loved to read.
She was content to pass time with a book, a pack of cigarettes, and a pot of coffee especially on rainy days when she didn't have anything particular to do. As a child, she went out of her way to disregard any rules set by others, but she was very stubborn about upholding her own rules and morals. To a fault, she was a troubling child.
Asako was close with Julia Bardera since their childhood and time together at the orphanage. After becoming a deadly assassin, she was once dealing with Heath Oslo where he wounded her with a 9mm bullet and Asako died from that wound years afterwards, not even realizing that a bullet was still in her. Asako made her raid on Oslo's hideout, only to have him escape, but found Yuuji Kazami inside an underground passage. She took him in as she couldn't stand a helpless child being left alone.
