Kon is the fox spirit that Inari saved. Since then, Kon supports Inari. She is the smallest of the familiars, and was assigned to Inari according to her personality match. She has the power to transform as well, and does so when needed. Kouji's younger brother, Shirō, appears to like her when she transformed.
Upon the first meeting with Inari, Kon looked like a normal dog with pale yellow fur. However, after becoming
Inari's familiar she transformed into a small fox of palm size with white fur and a green leaf at the end of her tail. Later on in the manga, it is revealed that she is able to transform into a human but with her fox tail and ears manifested as well due to inexperience. When she looks like human, her hair is secured with ribbons and she wore a hooded fox sweater.
She is able to change shape but is still inexperience as she manifests her fox tail and ears not as per her will.