Born to a wealthy family who owned a large portion of land in the
Fukushima countryside, with the easy accessibility of the family plot, Kumakubo was able to use some of it to build and develop the
Ebisu Circuit. Kumakubo also used the circuit to host numerous drifting events as well as various motorsport events. As the lead driver of Team Orange, as his car has always been orange, he started at the D1GP series in a
Nissan Silvia, in , whilst stumbling through the numerous
rallying magazines in his office and considering that the
Subaru Impreza was the car to have as many rear wheel drive cars were considered not suitable for drifting or in need of development to be considered suitable, also in a way to bring Impreza owners to his track, Kumakubo commissioned tuning company
JUN Auto to build an
Impreza WRX STI Impreza, significantly with a radiator on the rear passenger side. ==Complete Drifting Results==