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Takumi Fujiwara is a skilled street racer, but he suffers a crushing loss against the team Emperor's leader Kyoichi Sudou due to his AE86 experiencing an engine failure. Doubting his abilities, the recent high school graduate is then approached by the Akagi RedSuns' team leader Ryousuke Takahashi, who proposes the formation of a professional street racing team. Although it would be the ideal way to improve as a street racer, Takumi remains undecided. Does the young street racer have what it takes to become a professional? Perhaps Ryousuke and the RedSuns can help him reevaluate his own doubts and misconceptions concerning street racing. However, first and foremost, Takumi decides to settle the score with Kyoichi Sudou... [Written by MAL Rewrite]

This is a story about growth, friendship and passion. Through the continuous improvement of racing skills, the in-depth understanding of the concept of racing, the understanding of the meaning of life and the friendship of friends, the originally ambitious racer Yeji Dong has gradually grown into the most reliable partner, and will gradually grow into the most powerful racer... (Source: V2Anime)

The Mach is a racing car loaded with a new engine "X" specially developed and built by a man named Kenich Hibiki who was a racing driver as well as a motor engineer. However, in a test driving made prior to its completion, he was involved in an accident and judged as dead. Meanwhile his father Daisuke who was watching the test driving all the way recovered the wrecked car as his son`s memento. A few years later the damaged car rebuilt by him revives as the new Mach which comes to participate in Grand Prix. This time, however, for the purpose to protect the driver from a possible accident, the new car is equipped with a safety system called "Safety Seven" with seven guarding devices. Also, it is loaded with the engine "X" that miraculously survived the tragic accident. Now its driver is Go, younger brother of Kenichi, who is determined to succeed to his brother`s will. In fact, he successfully participates in Grand Prix and keeps growing up to be a top racer of the world. (Source: official site)