Minamo Negishi is a thirteen-year-old girl in her first year of middle school who appears in the anime Sketchbook ~full color'S~. She is the younger sister of Daichi Negishi. She has orange hair, brown eyes, and a small stature of 139 centimeters, which often causes her to be mistaken for an elementary school student. Her birthday is July 16, and her blood type is O.

Minamo is almost always cheerful and carries an energetic, outgoing demeanor. A notable trait is her habit of speaking in a very direct and spontaneous manner, often saying whatever comes to mind without holding back. She is not shy about approaching strangers and readily seeks contact with those around her. She frequently carries a camera with her, reflecting an interest in capturing images and observing the world through a lens.

Her role in the story begins when she meets the main character, Sora Kajiwara, during a small drawing trip in the neighborhood. Sora borrows Minamo's camera for sketching purposes, and later draws a sketch of Minamo while she is sleeping. This encounter leads Minamo to join Sora's circle of friends, expanding the group's dynamic. Her key relationships include her brother Daichi and her new friends from Sora's art-oriented social group. Minamo does not undergo dramatic personal change over the course of the series, but her integration into the group marks the primary arc of her involvement. Her notable ability is her use of a camera to document scenes, complementing the series' focus on visual observation and artistic expression.