Kanna Aso is a central character in the anime Run=Dim, depicted as a fourteen-year-old Japanese girl who serves as a pilot. Within the story’s setting in the year 2050, where much of Japan, including Tokyo, has been submerged due to the effects of global warming, Kanna is a member of the military group JESAS, serving as a co-pilot alongside her teammate, Kazuto Moriguchi. This period is characterized by a tense global power struggle over space development, with JESAS on one side and an international civil organization called Green Frontier on the other.

In terms of personality, Kanna is described as a smiling and cheerful young girl who possesses an unshakeable character. Her primary motivation is deeply personal; she is in love with her teammate and co-pilot, Kazuto, and this romantic feeling significantly influences her actions and dedication within the high-stakes conflict that will determine the planet's future. Her role in the narrative is that of a central protagonist whose personal bonds of love, friendship, and passion are intertwined with her professional duty as a pilot.

Regarding her specific function and abilities, Kanna is a mecha pilot. In the context of the Run=Dim story, she pilots a mecha known as the I-RA, which is characterized by a white color scheme. This distinguishes her from Kazuto, who pilots the blue Ultra Run=Dim unit. No further details about her unique skills or the specific armaments of her machine are provided in the available information.