[5] Tamura made his debut in Pro Wrestling Zero1 on August 27, 2020, at ZERO1 New ZERO1 where he defeated Chris Vice to win the World Heavyweight Championship.

[6] At BJW/ZERO1 Clash, a cross-over event promoted by Zero1 in partnership with Big Japan Pro Wrestling on December 4, 2020, Tamura teamed up with Yuji Okabayashi to pick up a victory over Hideyoshi Kamitani and Takuho Kato.

[7] At BJW/ZERO1/2AW Big Clas, a cross-over event produced by Zero1 in partnership with Big Japan Pro Wrestling and Active Advance Pro Wrestling on April 7, 2021, Tamura teamed up with Ayato Yoshida and Daichi Hashimoto in a losing effort to Daisuke Sekimoto, Kengo Mashimo and Masato Tanaka as a result of a six-man tag team match.

[9] He is known for competing in the promotion's signature events such as the Fire Festival, making his only appearance at the 2020 edition where he won the Block B with a total of twenty-two points after competing against Chris Vice, Masato Tanaka, Yuko Miyamoto, Tsugutaka Sato, Shogun Okamoto and Takafumi, but fell short to Hartley Jackson in the finals from November 1.

[10] As for the Furinkazan tournament, Tamura participated in a side match at the 2020 edition, where he teamed up with Kanon and Ren Ayabe in a losing effort to Asuka and Revengers (Masato Tanaka and Takuya Sugawara).