In the film Revolutionary Girl Utena: The Movie, also known as Adolescence of Utena, Akio Ohtori serves as a central antagonist whose role is steeped in tragedy and abuse. He is the older brother of Anthy Himemiya and the acting chairman of Ohtori Academy, though the narrative reveals he is already dead for much of the story. Before the film's events, Akio was once his sister’s beloved prince, an idealized figure. However, he became corrupt, and his relationship with Anthy devolved into a deeply dysfunctional and incestuous one. In an attempt to exert control, Akio would drug Anthy’s drinks to sexually assault her, believing her to be unconscious. The truth that Anthy was aware of these acts and allowed them to continue out of love for him caused Akio to panic. In his ensuing hysteria, he stabbed Anthy in the chest, creating a permanent hole that defines her appearance as the Rose Bride, before falling from a window to his own death.

Akio’s personality is defined by a desperate need for control and a hollow, parasitic charm. In life, he was charismatic and hedonistic, a glamorous adult figure who used his position and allure to manipulate those around him, including his fiancée Kanae Ohtori and other students. Yet, stripped of his power, he is revealed to be profoundly pathetic and elitist, unable to function without the material trappings of his status, such as his luxury car. His core motivation is to prevent change. He wishes to maintain the closed, eternal world of Ohtori Academy where he can continue to exist as a "prince," even if that means Anthy must remain a living corpse in her role. He represents the seductive but toxic pull of adulthood and the past, demanding that others stay trapped with him.

In the story, Akio appears not as a living man but as a ghost or a "dead prince". His role is the final obstacle to Utena and Anthy’s escape. As the girls attempt to break free from the academy in a car that Utena has transformed into, Akio’s spirit commands a massive, castle-like truck to block their path. He tries to convince Anthy to return to her abusive existence, arguing that she can only be a princess within the confines of his world. The key relationship is, of course, with his sister Anthy. This bond is a twisted cycle of abuse, dependency, and illusion, where Akio’s entire identity as a prince depends on Anthy’s magic and submission. When Anthy finally rejects him, declaring that he can only be a prince in that closed world and that she is leaving, it marks his definitive defeat.

Unlike some versions of the character, Akio in the film undergoes little positive development, instead serving as a static figure of toxic masculinity and abuse who is ultimately left behind. His notable abilities are less about physical power and more about his psychological manipulation and the illusory control he holds over the academy. Even as a ghost, he wields authority over the surreal architecture of the school. However, in a final, ignoble demonstration of his impotence, his attempt to stop the girls fails, and he is literally run over by their car as they speed to freedom. The film strips him of all majesty, revealing him not as a mastermind, but as a pathetic, abusive figure whose kingdom crumbles the moment his victim chooses to leave.