Haruaki Otsuki

Krush 37 was a kickboxing event held on January 4, 2014 at Korakuen Hall in Tokyo, Japan. In the main event, Shota Takiya and Takumi faced off for the vacant Krush -55kg title. The card also featured super fights between Haruaki Otsuki and Junpei Aotsu and between Ryuma Tobe and Choi Jin Sun, as well as the first round of the inaugural Krush -65kg title tournament.

Krush 121 took place on January 23, 2021, at Korakuen Hall in Tokyo, Japan. In the main event, Kazuki Yamagiwa faced Kona Kato. The card also featured Hinata Matsumoto versus Kazuki Miburo and Haruaki Otsuki versus Hitoshi Aketo.

Krush 143 took place on November 26, 2022, at Korakuen Hall in Tokyo, Japan. In the main event, Hayato Suzuki faced Vitor Toffanelli. The card also featured Haruaki Otsuki versus Hisaki Higashimoto and Tatsuya Oiwa versus Lyra Nagasaka.

Krush 50 was a kickboxing event held on January 4, 2015 at Korakuen Hall in Tokyo, Japan, the second of two Krush shows that day. The main event was a Krush -65kg title match between Naoki Terasaki and Noman, and the semi-final was a semi-final of the tournament for the vacant third Krush -70kg title between Yutaro Yamauchi and Yoichi Yamazaki.

Krush 41 was a kickboxing event held on May 11, 2014 at Korakuen Hall in Tokyo, Japan. The double main event featured Krush title matches at -55kg between Shota Takiya and Ryuma Tobe and at -60kg between Kan Itabashi and Haruaki Otsuki. The card also included a -55kg super fight between Taiga and Yuya Suzuki and three WILDRUSH League 2014 bouts.