Kotarō Komaki is a key supporting character in Overtake!. He is the son of Futoshi Komaki, the owner of Komaki Motors, and works as the team’s mechanic for their F4 racing effort. He is 17 years old and in his third year of high school. He has a height of 175 centimeters and blood type A. Kotarō grew up alongside Haruka Asahina, the team’s driver, and the two are as close as brothers, often addressing each other with the nicknames Kota and Haru. Their families have been close since childhood, and Kotarō has been involved with cars and racing from a young age, helping his father at the family business.

In terms of personality, Kotarō describes himself as smart rather than strong, and he lacks confidence in his physical strength. He has a cheerful and slightly joking demeanor, but his skills as a mechanic are solid and dependable. He takes his responsibilities seriously when it comes to the car, ensuring it is in top condition for races. His role in the story is primarily behind the scenes: he maintains and prepares the racing car, providing crucial technical support to the team. He also offers emotional support to Haruka, with whom he shares a deep bond of trust and friendship.

His motivations are rooted in supporting the team’s success and helping Haruka achieve his goals on the track. As a mechanic, he is focused on maximizing the car’s performance within the team’s limited resources. Throughout the series, Kotarō’s development is seen in his growing competence and reliability, as he takes on more responsibility and proves himself as a capable mechanic. He remains a steady presence, contributing to the team’s efforts and demonstrating loyalty and dedication.

Notable abilities include his mechanical talent, knowledge of car maintenance and tuning, and his ability to work under pressure. He is smart and resourceful, though he may not be physically imposing. His strong bond with Haruka and his father also highlights his interpersonal strengths, as he fosters a collaborative team environment.