Aoi has long, dark blue hair that reaches the chest but sometimes shown to be longer and blue eyes. She wears spectacles that has the same style as Minamoto's. She wears the Special Esper outfit like the rest of her teammates. The only difference is that the color of her ribbon and beret is blue. She also wears her earring Limiter on her left ear.
Aoi is the most innocent of the Children, due Kaoru having a love for perverted actions, and Shiho understanding the human dark side. Like the rest of her teammates, she fell in love with Minamoto. She is concerned of her smaller chest size compared to Kaoru and Shiho.
- As a level 7 teleporter, she is capable of teleporting herself and others as well as objects from one location to another instantaneously. More accurately, her ability is the manipulation of space and dimensions, and the main use of this ability is teleportation.
- Aoi uses this ability to transport herself and her allies rapidly over a long distance. However, the distance of her teleportation "jumps" are inversely proportional to the number and weight of people/objects she is teleporting as well as the number of times she is teleporting. Although this ability is mainly used for transport, Aoi has shown to use this ability to attack and depend herself. For example, she has teleported a car directly above a rooftop to fall on her enemies and a large piece of rock infront of her to block bullets. It can be assumed she is capable of teleporting objects into a person's body and cause serious injuries or even death. This ability can be extremely powerful, but has many drawbacks. For example, this ability cannot be used effectively when the user was distracted either emotionally or physically from extreme pain. Also, when there is a high level of background interference in the nearby vicinity, which can be caused by heavy rain, it becomes difficult to conduct an accurate teleportation. This ability is different to the portal teleportation practised by other teleporters such as Mio, but as a level 7 teleporter, Aoi may be able to use other teleportation techniques with special trainings.
Spatial Recognition Colonel J.D.Grisham stated teleportation can be described as the most advance of all psychic abilities. Teleporters are sensitive to spatial changes and distortions, and as a level 7 teleporter, Aoi should be able to utilise this its maximum power. Aoi can sense the teleportation location of nearby teleporters predict where they will appear. This ability also allows the movement and shape of nearby objects to be recognised when Aoi's vision is obstructed, removing any blindspots she may have.
Teleport Interference Aoi can limit the teleporting abilities of nearby teleporters by interfering with their abilities.
Quantum Cutter Unspecified when Aoi will acquire this ability, but in the future when she has gained the title of "Lightspeed Goddess", she was able to use this ability to cut a nuclear warhead in half.
Ultimate Teleportation Technique: Imaginary Space The technique was used by Feather, combining Shiho and Kaoru's power into Aoi. Aoi performed this technique to teleport Hyoubu into a space with no reappearing coordinates, a void space, a dimension of nothingness.
- Aoi is named for Aoi, Genji's first wife. Her last name may be a reference to Aoi's formal title, Aoi no Ue (葵の上) in the The Tale of Genji.