In Battle Royale II: Requiem, Kitano appears only in a brief flashback sequence, as the character had died at the conclusion of the previous film. Despite this limited screen time, this moment is crucial for understanding the motivations of his daughter, Shiori Kitano, who serves as a central figure in the sequel's narrative. The flashback is set prior to the events of the first Battle Royale and offers a deeper look into the troubled family life that was only hinted at through telephone conversations in the earlier film.

Regarding his background, Kitano is the estranged father of Shiori Kitano, a student who willingly transfers into the class selected for the second Battle Royale program. In the first film, he served as the homeroom teacher for a ninth-grade class and the administrator of the Battle Royale Program, a role in which he displayed a detached and often apathetic demeanor toward the violence unfolding around him. The sequel reveals that prior to his death, he and his daughter shared a cold and distant relationship. This is exemplified in the flashback scene where he mistakenly invites Shiori to dinner for what he believes is her birthday, only for her to coldly correct him, stating that her birthday was the day before. In this same conversation, he asks her if he should commit suicide, a question she scoffs at, calling him an idiot. These interactions paint a picture of a man who was profoundly lonely and disconnected from his family, a characterization that was also suggested in the first film.

His personality, as evidenced in this flashback and the first film, is marked by a sense of isolation, bitterness, and a desperate, ineffective yearning for connection. He struggles to communicate with his daughter, who rejects him entirely, refusing to even call him father. This personal anguish informs his role in the story of the sequel, which is primarily a narrative catalyst. Although Kitano is deceased, his legacy and actions directly motivate the character of his daughter. Shiori has a painting he created, which she keeps framed in her room. She eventually quits attending school upon realizing that the girl portrayed triumphantly in the painting is not herself, but Noriko Nakagawa, a survivor of the first program. This revelation, combined with her unresolved feelings about her father's death at the hands of Shuya Nanahara, drives her to volunteer for the second Battle Royale, seeking either revenge or answers about her father's emotional life.

Consequently, Kitano's key relationship is with his daughter, Shiori. The dynamic shown is one of mutual resentment and misunderstanding. While the film depicts Shiori's hatred for her father, her actions in the sequel reveal a deep-seated desire to understand him. Her entire arc is a response to his memory. There is no significant character development for Kitano himself in Requiem, as he appears only in a static flashback. However, the additional context of his home life deepens the audience's understanding of the lonely, sympathetic figure from the first film and shows the ripple effects of his life and death on the next generation. In terms of notable abilities, the sequel provides no new information beyond what was seen previously. His skills are primarily administrative and psychological, controlling the deadly program with a cold and manipulative efficiency, as well as proficiency with firearms, though his most memorable act is using a water gun to deceive his would-be killers in his final confrontation.