Kanako Mita is a significant supporting character in the anime Princess Nine. She is a student at Kisuragi High School and the daughter of the school's principal, a man who initially opposes the formation of the all-girl baseball team that serves as the story's focus. Kanako is a young woman of average height with brown hair styled at neck length, green eyes, and she is most often seen wearing her school uniform along with a pair of glasses and a ribbon tie, which contribute to her studious appearance.

Her personality is defined by a blend of intellectual diligence and quiet determination. She is an excellent student with consistently high grades, and her ambition for the future is to become a doctor. Despite her bookish exterior, Kanako possesses a deep, abiding passion for baseball, a love she developed during her junior high school years when she was a star player in softball. This creates her central internal and external conflict: she desperately wants to play baseball in high school, but her father has explicitly forbidden her from doing so.

Her primary motivation is to reconcile her love for the sport with her family obligations. This conflict drives her initial role in the story. Because her father is the principal and a vocal opponent of the girls' baseball team, Kanako is forced to hide her identity to participate. She adopts the pseudonym Tami Konaka, which is an anagram of her real name, and dons a disguise to play as the team's sixth batter and shortstop. Her skills are considerable; she throws and bats right-handed, and her fielding abilities are respected by her teammates. Notably, the ace pitcher Hikaru recognizes Kanako from their past encounters in junior high softball games, establishing that her athletic talent is not new. Her hobby of reading and analytical nature likely complement her strategic approach to the game.

Key relationships are central to her story, most prominently the one with her father, Principal Mita. His opposition to her playing baseball is the primary source of her struggle. Her loyalty, however, extends to her comrades on the team. She is described as a seriously loyal friend and teammate who refuses to give up on her goals, and the baseball club becomes the only place where she has friends. Her dedication to the team is so profound that she endures the stress of hiding her true self just to be able to play alongside them.

Kanako undergoes notable development, centered on her decision to stop hiding. In a critical moment during a game, a mishap with her wig, part of her disguise, causes her team to lose points. Overcome with frustration and the weight of her secrecy, she tears off the wig in the middle of the game, revealing her true identity to her father, teammates, and opponents alike. This act of public defiance shocks her father, who initially punishes her with house arrest and threatens to dissolve the baseball team as a consequence.

Her development culminates in a moment of personal conviction. Facing her father's anger and the potential end of the team, she passionately argues for her love of baseball and her desire to continue playing. Her sincerity and fervor are powerful enough to make her father reconsider his position, and he ultimately decides against disbanding the team. In this way, Kanako evolves from a player hiding in the shadows to a key figure who saves the team from dissolution through her courage and honesty. Her notable abilities include her solid skill as a shortstop, her academic prowess, and her specific talent for disguise, which she cleverly uses to play.