Kaneko Sonoka is a supporting character in the series. She is a student at Yasaka High School and serves as the student council vice president. She is among a small group of girls who have proclaimed themselves to be bodyguards to Aki Adagaki, one of the main characters.

In terms of her appearance, Kaneko has blonde hair styled with two pigtails. The tips of these pigtails are pink and are tied in a way that forms a ring-like shape, with the rest of her hair falling to her chest. In the anime adaptation, her eyes are depicted as a fuchsia color. She wears the standard Yasaka High School uniform, which consists of a pink shirt, a black vest with the school’s insignia, a yellow skirt, and a blue and yellow ribbon.

Kaneko is characterized by a calm and optimistic demeanor. However, beneath this composed exterior lies a manipulative nature. She is determined and resourceful, willing to go to considerable lengths to achieve her goals once she has set her mind to something. Notably, she is shown to be easily tricked or caught off guard by the strategies of Kanetsugu Gasou, another key character in the story.

Her primary role in the narrative is as an affiliate and companion to Aki Adagaki, acting as one of her self-appointed protectors within the school. Her relationship with Aki is defined by this self-assigned duty of a guard. Her connection to Kanetsugu Gasou is more adversarial in a lighthearted sense, as she often falls victim to his schemes. There is no significant development of her character throughout the series, and she remains a consistently minor supporting figure. A noted piece of trivia is that she is older than Aki Adagaki. Her notable abilities do not extend beyond her role as a student council officer and her general resourcefulness, with no exceptional or unique skills highlighted in the story.