Ayame appears as a young girl with medium-length purple hair, often adorned with a bell hairpin on the right side, and purple eyes. She typically wears a sleeveless white knee-length dress.

Despite her physical resemblance to a nine-year-old, Ayame retains the memories of her previous life, in which she lived to the age of 103. This grants her the knowledge and experience of a centenarian within the form of a child. She was the former owner of the Mysterious Wares Shop Akatsuki, which deals in enigmatic tools and items. Ayame is a skilled creator of these mysterious wares, an ability that is uncommon.

After her reincarnation, ownership of the shop passed to Nico, her great-grandchild from her past life. Although she no longer operates the business, Ayame continues to regularly assist Nico due to her extensive expertise in crafting mysterious items.

Ayame is characterized as being great at taking care of people. She also enjoys provoking others when the opportunity arises and has a tendency to engage in dangerous actions when confident of her victory. Her name carries the meaning of "color" and "bud" or "sprout."