Akito Takagi is one of the two central characters in Bakuman., serving as the writer half of the manga-creating duo known as Ashirogi Muto. He is a tall, slender young man with medium-length blond hair, gold or yellow eyes, and glasses, often seen wearing a red track sweater and a large pair of headphones around his neck. His physical appearance at the beginning of the story features curlier, wilder hair, which later becomes straighter and flatter.

Takagi is introduced as the smartest student in his class, consistently achieving top grades across his region and demonstrating a particular talent for literary subjects. His background includes a formative experience when his father, a banker, lost his job while Takagi was in elementary school. His mother subsequently pushed him to study intensely, hoping he would avenge his father's career loss. This pressure led to a breaking point when Takagi was in fifth grade, after which he declared he would decide his own future, and his mother stopped commenting on his choices.

Despite his academic potential and societal expectations that he would pursue a conventional career, Takagi dreams of becoming a manga writer. He is described as having wanted to create manga since childhood but acknowledges his lack of drawing skill, which he compensates for by seeking a partnership with an artist. He approaches manga as a popular modern medium and a quick way to earn money, stating that he lacks the singing ability or outstanding looks that would help in other areas of show business.

His personality is characterized by intelligence, calculation, and keen observation of his surroundings. He is ambitious, driven, and possesses a strategic mind that serves him well in navigating the competitive manga industry. He can be both impulsive and coldly calculating, demonstrating a sharp wit and quick thinking that often drives the partnership toward success. However, he has notable weaknesses, particularly his difficulty with gag comedy and humor, which directly contributes to the failure of one of his early serialized works, Tanto. He also struggles with romance and social situations in his younger days, often accidentally insulting his future wife Kaya Miyoshi through his awkwardness. He is not good at hiding his frustration, especially when his work is failing or receiving criticism, and he cares deeply about public and societal opinions regarding his creations.

Takagi is the catalyst for the entire story, as he is the one who discovers his classmate Moritaka Mashiro's artistic talent and proposes they become manga partners. He persuades Mashiro by revealing Mashiro's crush Miho Azuki's dream of becoming a voice actress and urging Mashiro to confess his feelings, leading to the promise that motivates both of them. This partnership forms the core of the narrative, with the two becoming close friends who look out for each other while pushing each other toward their shared goals. Takagi demonstrates fierce loyalty to Mashiro, at one point punching another student who mocked Mashiro's art without caring about being suspended from school.

His relationship with Kaya Miyoshi begins somewhat awkwardly, as he initially shows interest in her only to gain information about her friend Miho Azuki. However, through a series of misunderstandings and shared time together, genuine feelings develop, and she becomes his girlfriend and later his wife at age eighteen. Kaya is described as energetic, loud, and supportive, often cleaning the studio and maintaining a positive atmosphere that helps counter the stress of manga production. Despite frequently making jokes that nearly earn him a beating from his wife, Takagi supports her ideas and values her presence as part of the team.

In the professional sphere, Takagi forms significant relationships with several editors and rival creators. His first editor, Akira Hattori, plays a key role in the duo's success, providing guidance and knowledge about the manga industry. Takagi sees strategic value in Hattori, even tailing him at one point to identify potential weaknesses. He develops a respectful rivalry with the prodigy Eiji Nizuma, whom both Takagi and Mashiro consider their primary competition, while Eiji reciprocates as an avid fan of their work. His rivalry with Aiko Iwase is particularly notable, beginning when she developed a crush on him after he beat her in academic rankings. She later becomes a fellow manga writer at Jump, and the two share intense competitive tension, with Iwase wanting to crush Takagi at his own craft. He also interacts professionally with Yuriko Aoki, a writer who initially appears cold and self-centered but eventually warms to him, even developing a brief crush that goes unacted upon due to his engagement to Kaya.

Throughout the story, Takagi demonstrates notable abilities as a manga writer, particularly excelling in thriller, horror, and mystery genres. He is skilled at creating unorthodox storylines and a style known as serious comedy, where scenes with underlying seriousness come across with humor. His intelligence and strategic thinking help the duo navigate the complex editorial landscape of Weekly Shonen Jump, including understanding reader polls and competitive rankings. However, his struggle with gag manga and his tendency to overthink comedic elements represent a clear limitation in his writing range. His development throughout the series includes learning to write more effectively from female perspectives, seeking help from Aoki to overcome this challenge, and growing more emotionally mature in his relationships. He also faces significant obstacles, including writer's block and the pressure of public complaints about his work PCP from parents who considered it a bad influence on children, which caused him considerable frustration. His growth as a creator and as a person is central to the narrative, as he evolves from a purely strategic, academically-minded student into a dedicated professional who understands both the craft and the emotional depth required to create meaningful manga.