[1][6] After graduating from university, Komatsu began training for his professional wrestling career at the New Japan Pro-Wrestling (NJPW) dojo.

[8] [9] On January 4, 2014 Komatsu teamed up with Jyushin Thunder Liger, Manabu Nakanishi and Super Strong Machine to work a non-televised match at Wrestle Kingdom 8, NJPW's biggest show of the year.

[10][11] Throughout 2013 and 2014, Komatsu often faced off against fellow Young Lion Sho Tanaka, with both men trading victories in both singles and tag team competition.

[12] By 2015, Komatsu and Tanaka had begun teaming together on a regular basis, including working together in the New Japan Rumble as part of Wrestle Kingdom 9 on January 5, 2015.

[15][16] The Invasion Attack 2015 show saw Komatsu, Alex Shelley, Captain New Japan, Kushida and Yuji Nagata defeated Liger, Nakanishi, Ryusuke Taguchi, Sho Tanaka and Tiger Mask.

[18] On July 5, 2015, at Dominion 7.5 in Osaka-jo Hall, Nakanishi, Máscara Dorada, Taguchi, Tanaka and Nagata defeated Hiroyoshi Tenzan, Liger, Kojima, Tiger Mask and Komatsu in the untelevised first match of the night.

[19] His next match at a major NJPW show was on September 23, 2015 at Destruction in Okayama where he, Tanaka, Katsuyori Shibata and Nagata defeated David Finlay, Jay White, Nakanishi and Tetsuya Naito.

[5] Komatsu and Tanaka would be the latest in a long line of young Japanese wrestlers to travel to Mexico to learn the lucha libre style.

[29] The duo made their Mexican debut on January 31, teaming up with Okumura, forming the most recent version of La Ola Amarilla ("The Yellow Wave").

[33] On October 9, 2017, at King of Pro-Wrestling, Komatsu and Tanaka, billed as "Yoh" and "Sho", returned to NJPW, when they were revealed as Rocky Romero's new tag team Roppongi 3K.

The two defeated Funky Future (Ricochet and Ryusuke Taguchi) in their return match to become the new IWGP Junior Heavyweight Tag Team Champions.

In October, Sho and Yoh entered the 2018 Super Junior Tag League, winning the tournament for the second time in a row to face El Desperado and Yoshinobu Kanemaru at Wrestle Kingdom 13.

They would make their second successful title defense against Rocky Romero and Ryusuke Taguchi on the first night of the New Japan Road tour.

The trio lost the titles in a rematch to House of Torture in September at Burning Spirit[52] In November, Yoh teamed with new Chaos stablemate Lio Rush in the Super Junior Tag League.

[54] The duo earnt their title shot at Wrestle Kingdom 17, where they lost to IWGP Junior Heavyweight Tag Team Champions Catch 2/2 (TJP and Francesco Akira).

[58] As Rush was unavailable for the Super Junior Tag League due to illness, Yoh made a surprise appearance at Michinoku Pro Wrestling's anniversary show and confronted Musashi, who he had known since high school.