She is Takaragaoka High School student. She must pay debts from Oosawa Reona, an artist in her agency, Kirara Kikaku, that suddenly disappeared. Therefore, she forces Hikaru into being an artist, even she threatens Hikaru to disseminate his face photos if Hikaru refuses to cooperate.

She has a cat, named Maririn. She wants to be a normal student while can have fun without thinking about work, but she couldn't bear because Kirara Kikaku is legacy from her parents. Her mother, Akizuki Youko, died during Ayumi's birth. And her father is currently searching for Reona.

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