|Voice Actor||Miyuki Sawashiro|
|Magical Item||Jewel Charm|
Aoi is a young girl with white skin and brown eyes. She has large blond pigtails with side hair with inward curve ends.
Her primary attire is a school uniform. It consisting of a short blazer with a shirt underneath and a pleated miniskirt. She wears knee-high leather heeled boots as her footwear. She also wears a ribbon tie with Sapphie's Jewel Charm and pearl beads decorated on the middle.
Aoi is calm with a gentle heart, she has always wanted to have a real best friend even with her highest status, she can feel lonely and sad at times, she's also very affectionate to Sapphie. Aoi has a crush on Naoto Sakuragi.
She's the daughter of the principal of the school Rinko attends and Sapphie's human partner. Aoi is the richest girl in Takaragaseki, since her family owns a lot of establishments.
After her Jewelpet partner Sapphie is awakened, everyone convinces her that her best friends were by her side all along and after that, she helped Rinko and Minami in finding the other lost Jewelpets. She's taken care of by her trusted butler Genshirou in her mansion when her parents are away.
She worked part-time in a conveyor-belt sushi restaurant with Naoto.
- Aoi's voice actor is Miyuki Sawashiro, the same of Labra, Opal and Chite.
- "Aoi" in Japanese means blue.
- Her surname is Arisugawa: maybe Arisu, translated as "noble", is chosen because Aoi comes from a wealthy family, while "gawa" means "river".