TV-Series
Description
Kō is the younger brother of Takumi and the main protagonist of the comedy anime series Strange Plus. He first appears when he travels to a rundown slum neighborhood in search of his elder brother, who had run away from home. Upon locating Takumi, Kō discovers that he has become the head of a private detective agency called the Mikuni Detective Agency. Because Takumi refuses to return home, Kō decides to stay and begins working at the agency as a general helper, handling errands and odd jobs.

Kō has a straightforward and earnest personality, often serving as the straight man or tsukkomi to the eccentric and absurd behaviors of his brother and the other characters around him. He is level-headed, responsible, and frequently expresses exasperation at the bizarre situations he is pulled into. His primary motivation is initially to bring Takumi back home, but as the series progresses, he becomes more absorbed into the daily life of the agency and its strange cases.

In the story, Kō is the audience surrogate and the unifying element that ties the different comedic episodes together. His role is to react to the chaos and to provide a relatively normal perspective against the peculiar antics of the agency's staff and clients. The title Strange Plus itself refers to him as the "plus" added to the already "strange" group of detectives.

His most important relationship is with his brother Takumi, who is flamboyant, carefree, and frequently crossdresses. Kō’s attempts to convince Takumi to return home form a recurring thread, though their dynamic gradually shifts from one of pursuit to genuine companionship and teamwork. Kō also interacts with the other agency members: the strongman Masamune and the secretary Miwa, as well as a variety of quirky supporting characters such as the doctor Ozu and the young girl Dorothy. These relationships expose him to increasingly strange situations, but also help him grow into his role as a functional member of the agency.

Over the course of the series, Kō undergoes subtle development. He starts as a relatively out-of-place newcomer who is determined to fix his brother's situation, but slowly adapts to the absurdity around him and begins to form his own attachments to the people he meets. While his goal of bringing Takumi home never fully disappears, it becomes less urgent as he finds his own place in the agency.

Kō possesses no supernatural or remarkable abilities. His strengths lie in his persistence, common sense, and ability to endure the eccentricities of those around him. He is physically ordinary and often finds himself in over his head, yet his determination and grounded nature allow him to navigate the comedic turmoil of the Mikuni Detective Agency.