Ryosuke Takahashi (高橋 涼介, Takahashi Ryōsuke; known as Ry in the Tokyopop version) is the founder, and leader of both the Akagi RedSuns and Project D. Famously nicknamed Akagi's White Comet (赤城の白い彗星, Akagi no Shiroi Suisei), Ryosuke created the RedSuns with the purpose of dominating the street racing scene all over Japan, recruiting his brother Keisuke and others local to Mount Akagi to achieve this goal.

Alongside Keisuke, they're both given the nicknames of the 'Rotary Brothers'. He is a very skilled racer who can predict the racing outcomes by his theories, something that Keisuke (his brother) has been unable to understand and/or replicate. He drives a White Mazda FC3S RX-7.

His real aim is to figure out the 'Fastest Racing Theory', and this is where Takumi Fujiwara fits in almost perfectly.