Shikibu Kanō is Rei "Zero" Kanō's grandmother and his primary guardian, living with him following his father's absence and his mother's passing. She embodies an energetic and supportive presence within their home. Her role focuses on offering stability and encouragement to Zero, especially regarding his interactions with Jun Nonomiya. Shikibu holds a strong fondness for Jun and actively champions her grandson's relationship with her, functioning as an advocate for their bond due to her recognition of Jun's positive influence on Zero. Official media provides no explicit elaboration on her background, past, or personal development. Her consistent portrayal emphasizes warmth and approval of Jun's presence in Zero's life. Shikibu Kanō's significance stems from her steadfast encouragement of the connection between Zero and Jun, serving as a grounding familial presence amidst the series' comedic and romantic events.