Kumakubo is a leader of Team Orange and also well known as the General Manager of Ebisu Circuit. He started to use rear wheel drive converted Subaru Impreza in D1GP since 2005 and won 2006 title. From 2007 he changed his car to Mitsubishi EVO 9 and finally replaced to Mitsubishi EVO X in 2009. His extreme attacking style in Tsuiso (twin battle) hasn’t changed even he is in different cars! His motto is “Tsuiso joutou (twin battle well come)”.

Suenaga is older brother of well known “Suenaga Drift brothers” and he works for Ebisu circuit as Public Relations. He loves any motor sport and used to race on motor cycles same as Kumakubo. He started to compete at D1GP with Subaru Impreza (GC8) from 2006 and also competed in D1 Street Legal Series with his own private car. In 2008, he builds a new record in D1 Street Legal Series with 5 wins out of 6 rounds and became a championship winner. He is trying to repeat same domination with his swapped ex Kumakubo’s Mitsubishi Lancer EVO 9 in 2009.