[4] At JTO Itadaki, an event promoted by Professional Wrestling Just Tap Out on November 18, 2021, Kitamura unsuccessfully challenged Arata for the Independent World Junior Heavyweight Championship.

[10] Due to Zero1 holding various partnerships with several other promotions, Kitamura worked in multiple cross over events such as the BJW/ZERO1/2AW Big Clash from December 24, 2022, where he teamed up with Tatsuya Hanami and Yuya Aoki in a losing effort against Ayato Yoshida, Daisuke Sekimoto and Masato Tanaka.

The one for which he is best known for competing in is the Tenka-Ichi Junior Tournament, competition where he debuted in 2019, edition won by Hub and also involving Fuminori Abe, Hide Kubota, Ikuto Hidaka, Mao, Raicho, Sean Guinness, Tatsuhito Takaiwa and Sugi.

[16] He scored his next appearance at the 2021 edition where he teamed up with Takafumi and defeated Tsugutaka Sato and Koji Doi in the first rounds but fell short to Tomohiko Hashimoto and Gajo in the semifinals.

He made his first appearance in the company on the second night of the NOAH Winter Navigation 2018 from December 7, where he teamed up with Sugi and Tatsuhiko Takaiwa in a losing effort against Ratel's (Hayata, Tadasuke and Yo-Hey).