After graduating from Hyogo Prefectural Kakogawa Higashi High School, he entered Doshisha University and majored in Commerce.

Daily Sports in Japan reported that Razor Ramon HG retired from pro wrestling after Hustle Mania, which took place November 23, 2006, at Yokohama Arena with Sumitani being defeated by The Esperanza.

[2] Hard Gay rose up to become one of the top faces of the HUSTLE promotion, but his pro wrestling career came to an abrupt end in July 2009 when he shattered his left foot while diving from the ring during an event at Korakuen Hall.

[4] It was through pro wrestling in their college years, that Sumitani met Makoto Izubuchi, with whom he would later form the comedy duo "Razor Ramon", the name inspired by the character portrayed by professional wrestler Scott Hall, which debuted in the WWF (WWE) in 1992.

During their college years, Razor Ramon won the Fukuwarai award in the Imamiya Kids’ Ebisu Manzai Contest and gained experience on the stage through the audition live performance SABUKI at 2chome-gekijo, an Osaka comedy club opened by the Yoshimoto Kogyo comedy troupe at which many comedians from the Kansai area start their career.

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.

Sumitani's supposed homosexuality was exposed as a gimmick when he was caught in the midst of a date with Japanese actress and swimsuit model Anna Suzuki, whom he has since married.

He has been criticised for his stereotypical depiction of gay men and for building a career on using bizarre and extreme antics to "parody" a social minority.

[5] Prior to his transition back to television comedy, Sumitani revealed that during his hiatus between his career-ending wrestling injury and his impending TV return that he has fallen on hard times and has been making the equivalent of $70 USD a month.

Sumitani released his first single entitled "Young Man" on 8 February 2006; it is a Japanese rendition of the Village People’s song "YMCA."

HG (as himself) portrayed a gym teacher in the high school episode of the batsu game series from the Japanese variety show Gaki no Tsukai.

Hard Gay, dressed differently, makes a cameo as a construction worker in the game Freshly-Picked Tingle's Rosy Rupeeland.

After he fixes one of the bridges for Tingle, he proceeds to do his trademark pelvic thrusts while a smooth jazz style song plays in the background.

[6] Once again dressed in his wrestling outfit, Sumitani makes a cameo as Hard Gay in the 2016 Netflix drama Hibana: Spark.