A professional competitor since 2003, he is the 2008 K-1 World MAX Japan tournament winner and the 2017 K-1 Super Welterweight Grand Prix runner-up.

When he was a junior high school student, he belonged to a track and field athletics team, and was training in sprinting.

[2] After graduation of Ishida high school, Kido entered at faculty of Physical Education at Kokushikan University.

He continued pressuring in the second round, finally knocking Tsurugi out with a head kick at the 2:32 minute mark.

[8] Kido was scheduled to face Kenshi Toda at Ikusa GP -U60 Superstarz Tournament -Final Stage- on September 19, 2005.

[9] Kido combined lead leg middle and high kicks with knees and the second round, with Toda appearing unable to deal with them.

Midway through the second round, Kido clinched Toda and landed several undefended knees, which forced his opponent's corner to throw in the towel.

[10] Kido was scheduled to fight Hideki Mizutani in the quarterfinals of the RISE Welterweight Dead or Alive tournament, held at R.I.S.E.

Kido won the rematch by a third-round knockout, stopping Akamine with a head kick, 13 seconds into the round.

Kido cut Lewis with an elbow in the fourth round, prompting the ringside doctor to stop the fight.

[16] Kido made his return to K-1 at K-1 World MAX 2007 Japan Tournament on February 5, 2007, when he was scheduled to face Kenji Kawabata.

[19] Kido challenged the reigning M-1 Middleweight champion Shingo Garyu at M-1 "120th Anniversary of Japan-Thailand -Muay Thai Hearty Smiles-" on September 24, 2007.

They previously fought at -1 "120th Anniversary of Japan-Thailand -Muay Thai Hearty Smiles-" on September 24, 2007, with Garyu winning by unanimous decision.

Kido was more successful in the rematch, as he won the fight by unanimous decision, with all three judges scoring the bout 30–27 in his favor.

[40] Kido was scheduled to face Kenta Yamada in his return to K-1, in the quarterfinals of K-1 World MAX 2011 -70kg Japan Tournament Final on September 25, 2011.

[44] Kido was scheduled to challenge the reigning Krush Super Welterweight champion Kenta Yamada at Krush.17 on March 17, 2012.

The two of the fought once previously, in the quarterfinals of K-1 World MAX 2011 -70kg Japan Tournament Final, with Kenta winning by decision.

He first fought Yū Hirono at Big Bang 10 on September 2, 2012, and won the fight by unanimous decision, with all three judges awarding him a 30-29 scorecard.

[58] Kido was scheduled to fight Li Yankun for the WBKF −70 kg World championship at Big Bang 16 on February 23, 2014.

[62] Kido was scheduled to face the two-time K-1 World MAX tournament winner Andy Souwer at RISE 100 - Blade 0 on July 12, 2014.

[65] Kido was scheduled to defend his WBKF −70 kg World title against Vahid Roshani at Big Bang 20 on February 15, 2015.

[66] Kido was scheduled to challenge the reigning ISKA Super Welterweight champion Armen Petrosyan at Oktagon 2015: 20 Years Edition on April 21, 2015.

[72] Kido was scheduled to face the WKA Romanian Welterweight champion Robert Stoica at Big Bang 26 on September 4, 2016.

[73] Kido was scheduled to face Sanny Dahlbeck at K-1 World GP 2016 Featherweight Championship Tournament on November 3, 2016.

[79] Following his loss to Allazov, Kido dropped down to welterweight, a 2.5 kg decrease in weight compared to his previous fights.

In his first fight in a new weight-class, Kido was scheduled to face Minoru Kimura at K-1 World GP 2017 Heavyweight Championship Tournament on November 23, 2017.

[85] Kido was scheduled to face Jonathan Tuhu at K-1 World GP 2018: 3rd Super Lightweight Championship Tournament on November 3, 2018.

[86] During the post-fight interview, Kido called for a title fight with the reigning K-1 Welterweight champion Yuta Kubo.

[96] Kido was scheduled to face Daiki Watabe during BigBang's 10th Year Anniversary event, held on November 8, 2020.

[111] Kido faced the two-time K-1 World MAX champion Buakaw Banchamek at Legend of Rajadamnern: Last of the Generation on September 9, 2023.