is a retired Japanese kickboxer, who fought professionally in RISE. He was the 2021 RISE Dead of Alive Super Flyweight (-53 kg) Tournament winner and was a one-time RISE Super Flyweight (-53kg) title challenger.

As of October 2021 he was the #2 ranked strawweight kickboxer in the world by Combat Press.

Kazane Nagai

Kickboxing career

DEEP KICK

Kazane made his professional debut in the DEEP KICK Freshman Tournament, held at DEEP☆KICK 25 on May 24, 2015. He was scheduled to face Kyosuke Nishida in a two-round semifinal bout. Kazane won the fight by unanimous decision, with scores of 20–19, 20–19 and 20–18. Advancing to the finals, Kazane faced Yuto Kuroda in a three-round, three minute bout. He once again won by unanimous decision, with all three judges scoring the fight 30–27 in his favor.

Kazane Nagai

Kazane was scheduled to face Ryota Naito at DEEP☆KICK 27 on September 21, 2015. Following a relatively even first round, Naito scored a knockdown with a head kick in the second round. Although he was unable to finish Kazane, Naito won the fight by unanimous decision, with scores of 29–27, 29–27 and 30–28.

Kazane Nagai

Kazane was scheduled to face Takasuke Sekimoto at DEEP☆KICK 28 on December 23, 2015. Kazane won the fight by a second-round technical knockout, finishing Sekimoto with punches after knocking him down with a knee strike.

HOOST CUP

Kazane was scheduled to make his promotional debut with HOOST CUP against Koudai Hirayama at HOOST CUP KINGS OSAKA on October 2, 2016. He suffered his second professional loss by unanimous decision. Following this loss, Kazane was scheduled to face Kai Hasegawa at HOOST CUP KINGS Kyoto 2 on March 5, 2017. He won the fight by a first-round knockout. He won his next fight against Kyosuke at HOOST CUP KINGS Kyoto 3 on July 9, 2017, by a third-round technical knockout, winning two consecutive fights for the first time since his professional debut.

Kazane was scheduled to face Koki Osaki at HOOST CUP KINGS NAGOYA 3 on September 30, 2017. Osaki won the fight by unanimous decision, snapping Kazane's two fight streak, with all three judges scoring the fight 30–25. Kazane was knocked down twice in the fight, in the first and third rounds, both times with a right straight.

Kazane was scheduled to fight a rematch with Kyosuke at HOOST CUP KINGS OSAKA 2 on November 26, 2017. He won the closely contested fight by majority decision, with scores of 29–29, 30–29 and 30–29.

Kazane was scheduled to face King Takeshi at HOOST CUP KINGS KYOTO 4 on February 25, 2018. He lost the fight by unanimous decision, with scores of 29–28, 30–28 and 30–27.

Kazane returned to DEEP KICK for his next fight, following a three-year absence from the promotion. He was scheduled to face Hiroki Matsuoka at DEEP☆KICK 36 on July 1, 2018. Kazane scored the singular knockdown of the fight with a head kick in the first round. He won the fight by unanimous decision, with scores of 29–28, 29–28 and 30–27.

RISE

In March 2019, Kazane signed with RISE and moved to the Team Teppen gym. He was scheduled to make his promotional debut against Yusei Murai at RISE 131 on March 23, 2019. Kazane won the fight by a second-round knockout.

Kazane was scheduled to face Hiroki Matsuoka at RISE EVOL.4 on June 14, 2019. He won the fight by unanimous decision, with scores of 30–28, 30–29 and 30–28.

Kazane was scheduled to face Reiya at RISE 134 on September 29, 2019. He won the fight by a second-round technical knockout, successfully knocking Reiya down three times in under two minutes.

Kazane was scheduled to face Kiri Matsutani at RISE 135 on November 4, 2019. As the fight was ruled a draw following the first three rounds, the two of them fought an additional round, after which Kazane was awarded a unanimous decision.

Kazane's five-fight winning streak was snapped by Kazuki Osaki at RISE 137 on February 23, 2020. Osaki knocked Kazane twice during the bout and won the bout by unanimous decision. Two of the judges scored the fight 29–27 for Osaki, while the third judge scored all three rounds in his favor. Kazane suffered an injury during this fight, which sidelined him for the rest of the year.

Kazane was scheduled to face Hiroyuki at RISE 146 on February 23, 2021. He won the fight by unanimous decision, with all three judges scoring the fight 30–28.