[6] Nira made his professional wrestling debut on April 20, 2002, at K-DOJO First Impression, an event promoted by Kaientai Dojo where he teamed up with Apple Miyuki and Maya to unsuccessfully challenge Psycho in a 3-on-1 handicap match.

[7] At K-DOJO Club-K Free on November 3, 2004, he competed in a 28-man battle royal to determine the #1 contender for the Strongest-K Championship also involving Gentaro, Hi69, Taka Michinoku, Quiet Storm and others.

[11] Two years later at Ryōgoku Peter Pan 2011 on July 24, Nira competed in another rumble rules match again involving notable opponents such as Yuzuki Aikawa, Tsuyoshi Kikuchi, Emi Sakura and Cherry.

[12] At Budokan Peter Pan on August 18, 2012, Nira defended the Ironman Heavymetalweight Championship in the rumble match unsuccessfully in front of the winner Yoshiaki Fujiwara, Mio Shirai, Tomomitsu Matsunaga, Ken Ohka and others.

[13] As for the DDT Judgement branch of events, Nira made his first appearance at Judgement 2009 on April 5, 2009, where he firstly defeated Mammoth Handa and Yoshiaki Yago in a three-way match to qualify in a #1 Conterdership Double Chance Battle Royal with a contract suspended above the ring to challenge for the KO-D Openweight Championship, match which also involved the winner Harashima, Daisuke Sekimoto, Poison Sawada Julie, Kazuhiro Tamura and others.