吉本興業
After completing his degree at the prestigious Doshisha University, Sumitani got a job at CO-OP KOBE, as a grocery delivery man. His desire to pursue a career as a professional comedian led him to quit his job after four months, when he joined Yoshimoto Kogyo with his partner Makoto Izubuchi. Razor Ramon made their TV debut in 1999 and won the Judges Special Award in the ABC Owarai (Comedy) Grand-Prix in 2000. Both Sumitani and Izubuchi joined the Yoshimoto Kogyo-produced program Yoshimoto Shin-kigeki in 2001, often playing yakuza, salaryman, udon restaurant owners, construction workers, and others.