Early career (1995–2004)

This section of a biography of a living person does not include any references or sources. (June 2023)

Nosawa spent most of his early career training and wrestling in Mexico, most notably with Consejo Mundial de Lucha Libre (CMLL). He also spent much of his early career competing on the U.S. independent scene, Nosawa has competed for American promotions such as Ring of Honor (ROH), Pro Wrestling Guerrilla (PWG), and Xtreme Pro Wrestling (XPW). Along with Mitsunobu Kikuzawa, Kazuhiko Masada, Minoru Fujita and Katsushi Takemura, Nosawa created the group "Tokyo Gurentai".

In 2004, he would adapt the "Nosawa Rongai" or "Nosawa Out of the Question" ring name as a play off to a comment made by Kaz Hayashi, who had replied "Nosawa is out of the question" when he was asked about whether he was going to allow Kazushige to challenge for the World Junior Heavyweight Championship. By doing this, Nosawa forced a title match against Hayashi, and although he lost, he would decide to keep the name for the rest of his career.

Juggalo Championship Wrestling

Total Nonstop Action Wrestling (2003–2004)

This section of a biography of a living person does not include any references or sources. (June 2023)

Nosawa would first gain national U.S. exposure by making appearances for Total Nonstop Action Wrestling (TNA). He debuted at the 2003 Super X Cup, losing in the first round to Juventud Guerrera; he then reappeared as captain of Team Japan in the 2004 World X Cup, where he ended up placing last by the end of the tournament. Nosawa would go on to make sporadic appearances on the early episodes of TNA Impact, usually teaming up with fellow Japanese rookie Kazushi Miyamoto. The duo even challenged for the NWA World Tag Team Championship at TNA's second Anniversary show in June 2004, but ultimately came up short against America's Most Wanted. The duo's last in-ring appearance for the company would be at Victory Road '04, where both Nosawa and Miyamoto competed in the X-Division Gauntlet match, which was won by Hector Garza.

All Japan Pro Wrestling (2005–2008)

This section of a biography of a living person does not include any references or sources. (June 2023)

Nosawa would originally find little success after arriving in All Japan Pro Wrestling (AJPW) in the mid-2000s, losing as many matches as he won. On March 20, 2005, he received an opportunity at the World Junior Heavyweight Championship, but would lose to defending champion Taka Michinoku. On July 26, he lost a "Banishment" match to his old friend Mazada, and was forced to leave All Japan. Soon after that, he would reappear as a masked wrestler named Space Lone Wolf (Keiji Mutoh's old alter-ego), finding more success than his previous character. However, by December, Space Lone Wolf would be unmasked and revealed as being Nosawa.

In 2006, Nosawa would begin again wrestling with his old friend Mazada again, and for parts of the year would also team with Brute Issei and Akira. Towards the end of 2006, Nosawa and Mazada began to team up with Minoru Suzuki to form "Minoru Gundan", which landed Nosawa a more prominent role in the promotion. He and Suzuki would go on to wrestle in the World's Strongest Tag Determination League, but unfortunately the team would come in last place.

In 2007, Nosawa promoted several comedy wrestling shows, making fun of Antonio Inoki's Inoki Genome Federation and using both talent from All Japan, as well as freelancers. During the Champion Carnival, Nosawa switched his name to El Nosawa Mendoza and formed a new stable called "Los Mexico Amigos", with Pepe Michinoku (Taka Michinoku) and Miguel Hayashi, Jr (Kaz Hayashi). Nobutaka Araya then joined the team as El Hijo del Araya Segundo after the Carnival's final show. Along with changing their names, the group wore the official colors of the Mexican Flag (Red/Green/White). After multiple bouts against Minoru Suzuki, Nosawa offered Suzuki an invitation into Mexico Amigos, to which he declined. This resulted in the group changing multiple assets. Their name was changed to Mexico Amigos Black, the previous worn Mexican Flag attire became black and gold attire, and Araya was kicked out of the group. Later in the year, Mexico Amigos teamed with "Ray Suzuki" to defeat the team of Ryuji Hijikata, Kikutaro, T28 and Ryuji Yamaguchi. After the match, Ray Suzuki revealed himself as Minoru Suzuki. Suzuki stated that starting the next year Mendoza would throw his Amigos tights away and return to the Nosawa Rongai ring name, Suzuki then kidnapped Nosawa to start his "early training". This was followed by Pepe and Miguel announcing they would return to Mexico, while Kaz Hayashi and Taka Michinoku were announced as returning to All Japan come the new year. After one last "Viva Mexico", Los Mexico Amigos disbanded.

Tokyo Gurentai and other promotions (2007–present)

Since disbanding from Mexico Amigos, Nosawa has rejoined teaming with Mazada and Takemura as the "Tokyo Gurentai". Nosawa, Mazada, and Takemura later align themselves with Minoru Suzuki and Taiyō Kea, and dubbed their new group GURENTAI. Nosawa won a game of Jenga for the group's leadership role, but Suzuki immediately shot down the idea of Nosawa as the leader. Nosawa would later return to All Japan Pro Wrestling (AJPW) and was defeated by Rene Dupree in his return match.

Outside of AJPW, Nosawa performed for companies under the Global Professional Wrestling Alliance (GPWA) banner up until the alliance's demise, sometimes alongside his mentor Keiji Mutoh.

On February 20, 2011, Nosawa was arrested on charges of stealing a taxi and driving it without having a driving license.^[7] Two days later Nosawa announced that he was taking an indefinite break from professional wrestling.^[8] Nosawa returned from his break on June 25 at a Minoru Suzuki promoted charity event, losing to Suzuki in the main event.

Since September 2013, Tokyo Gurentai, Nosawa included, has worked regularly for Wrestle-1.

Since April 2015, Nosawa joined the newly resurrected Frontier Martial-Arts Wrestling, as the leader of Monster-gun, which evolved into W*ING Monster-gun, when Kintaro Kanemura joined the group.

On August 27, 2017, Nosawa, as Black Tiger VII, teamed with Taka Michinoku to defeat Atsushi Aoki and Hikaru Sato for the AJPW All Asia Tag Team Championship.^[9] They lost the title to Naoya Nomura and Yuma Aoyagi on September 30.^[10]

Nosawa is currently working as the head booker for Pro Wrestling Noah.

Marijuana arrest

On May 23, 2012, Nosawa and former girlfriend Io Shirai were arrested at the Narita International Airport in Narita, Chiba upon their return from Mexico to Japan under suspicion of trying to smuggle 75 grams of marijuana, hidden inside paintings of the two, into the country.^[21][22] On July 9, Mexico-based Japanese wrestler Takuya Sugi held a press conference and confessed to planting the drugs on Shirai and Nosawa.^{[23][24][25][26][27]}