Kuzuha Shionogi plays as a back-left defender for the girls' volleyball team at Aota Academy. Her reserved nature manifests as soft-spoken interactions and minimal communication, both socially and within the team. This withdrawal originates from childhood sexual abuse by an undisclosed man, forging her into a heterosexual misandrist who harbors deep aversion towards men despite her orientation. Her character arc is defined by intense psychological conflict when she develops unexpected feelings for Oh Motoura, the team's male coach. This attraction directly opposes her ingrained resentment and distrust, creating significant emotional turmoil.

On the court, Kuzuha operates with quiet competence and focus, reliably contributing to matches. Her defensive skills in the back-left position are recognized within the team structure. Physically, she possesses long black hair reaching her waist and brown eyes. Standing 1.75 meters tall with measurements of 82-57-84, she wears the team's sports uniform during training and competitions.