He has faced several notable fighters of his weight division such as Kaew Fairtex,[3] Hideaki Yamazaki, Yasuomi Soda,[4] Masaaki Noiri,[5] Massaro Glunder[6] and Hiroya.
[13] Following his three fight winning streak, Kimura fought Yuji Takeuchi in a 63 kg title eliminator.
[15] Kimura rebounded from his failed title bid with a TKO win over Daizo Sasaki during Krush 39.
[16] In his next fight he faced the forme Krush and ISKA champion Thomas Adamandopoulos, whom he beat by a second round TKO.
[18] Kimura was scheduled to fight the 2014 K-1 Welterweight Grand Prix winner Kaew Fairtex in January 2015.
[28] He took part in the 2017 K-1 Welterweight Grand Prix, and faced Yuta Kubo in the quarter finals.
[34] He fought Kazuki Yamagiwa in June 2018, and won the fight by a first round left hook KO.
[36][37] After winning the Krush title, he lost to Jordann Pikeur by TKO, after being knocked down three times inside of the third round.
[50][51] He was scheduled to fight the HEAT Kick Middleweight champion Abiral Ghimire during K-1 World GP 2020 in Tokyo in a non-title bout.
[53] Kimura was scheduled to make his first K-1 Welterweight title defense against Hiromi Wajima, whom he had previously beaten by knockout, at K-1 World GP 2021 in Osaka on December 4, 2021.
[54] He lost the fight by a third-round knockout, as he was unable to beat the eight count after suffering a body kick knockdown.
[59] However subsequently it was revealed that Kimura himself had requested to be tested for anabolic steroids and the results to be publicly announced.
Eventually Kimura tested positive for steroids, and the win over Lokoku was overturned to no contest.
[60] After testing positive, Kimura admitted to having used performance enhancing drugs before the two previous bouts, which were also overturned to no contest.
[63] In September 2016, Kimura made his mixed martial arts debut for the Rizin Fighting Federation in Tokyo.