"Strait Jacket" is a three-episode OVA series set in a fantasy world where magic and technology coexist. The story unfolds in a society where sorcerers wield immense power, but their use of magic often leads to catastrophic consequences, such as the creation of monstrous beings known as "Demons." To regulate and combat these threats, the International Sorcerer Association employs specialized agents called "Tactical Sorcerists," who are equipped with mechanical suits known as "Strait Jackets." These suits enhance their magical abilities while containing the dangerous side effects of spellcasting.

The protagonist, Rayotte Steinberg, is a Tactical Sorcerist tasked with eliminating Demons and protecting civilians. Rayotte is a stoic and disciplined individual, driven by a sense of duty and a tragic past. His younger sister, Leiot Steinberg, serves as a supporting character, providing emotional depth to the narrative. Leiot is a kind-hearted and determined girl who deeply cares for her brother, though their relationship is strained by the dangers of his profession.

The plot centers on Rayotte's mission to investigate a series of Demon outbreaks in a city plagued by corruption and political intrigue. As he delves deeper, he uncovers a conspiracy involving unethical experiments conducted by powerful figures within the Sorcerer Association. These experiments aim to create artificial Demons, blurring the line between humanity and monstrosity. Rayotte's journey forces him to confront moral dilemmas, the consequences of unchecked ambition, and the fragility of human life.

The series explores themes of sacrifice, the cost of power, and the ethical implications of technological and magical advancements. Rayotte's internal struggle with his own humanity and the weight of his responsibilities adds complexity to his character. The narrative is punctuated by intense action sequences, showcasing the destructive potential of magic and the high stakes of Rayotte's missions.

Supporting characters include Iola, a skilled sorceress and Rayotte's colleague, who provides insight into the workings of the Sorcerer Association, and Kahn, a mysterious figure with ties to the conspiracy. The antagonists, driven by greed and a desire for dominance, serve as a foil to Rayotte's ideals, highlighting the darker aspects of the world.

"Strait Jacket" combines elements of dark fantasy, action, and moral inquiry, presenting a compact yet engaging story. The series balances its exploration of ethical questions with fast-paced storytelling, making it a notable entry in the genre of magical action anime.