The owner of the bakery/cafe Blue Thunder. She is also the mother of Toori Aoi and Kimi Aoi. She has a very helpful personality, with a good disposition, such as when she took in the unidentified automated doll, P-01s, as an employee, as well as when she provided food and nutrition to the then starving Masazumi.

In Volume 4-B, it is revealed that she inherited the name of Ono Zenki, but after the history recreation of Zenki's death, she received the surname Aoi from Horizon's mother and used an alternate pronunciation of Zenki, so her name is now Aoi Yoshiki.

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