Kenich Hibiki, a skilled motor engineer and racer, developed the advanced "X" engine for the Mach racing car. Tragically, he died in a fatal accident during testing. His father, Daisuke, salvaged the damaged car for sentimental reasons and spent years meticulously rebuilding it. The rebuilt car, now called the new Mach, featured the "Safety Seven" system - seven protective components designed to prevent accidents. It also retained the unique and resilient "X" engine. Kenich's brother, Go, took over as the driver and was determined to continue his brother's legacy. Go quickly became one of the world's top racers, consistently rising to the top of Grand Prix circuit standings.