Toma Akizuki (秋月 斗真) — the older brother, calm and methodical. He’s known as the “Brain of Crimson Velocity.” Toma grew up taking care of Kenta after their parents’ divorce, sacrificing his own dreams to support his younger brother’s training. He runs with precise control and a deep sense of responsibility — never the fastest, but always the most reliable. Kenta Ryuzaki (龍崎 健太) — the younger brother, passionate and hot-headed. He took their mother’s surname, Ryuzaki, after she remarried. Kenta’s powerful running style is fueled by raw emotion and pride — he runs not just to win, but to prove he’s not living in Toma’s shadow. Despite their last names being different, everyone knows they share the same fire in their stride. Their dynamic creates both tension and unity in the team — Toma runs with strategy, Kenta runs with heart, and when they synchronize in a relay, it’s unstoppable.
