[6] He also worked for Big Japan Pro Wrestling, competing in various death matches such as a 8-man fluorescent lighttube match at BJW Last Buntai ~ Goodbye Yokohama Buntai on September 6, 2020 where he teamed up with Yuki Ishikawa and the 3rd Generation Chimidoro Brothers (Masaya Takahashi & Toshiyuki Sakuda) in a losing effort against Abdullah Kobayashi, Jaki Numazawa, Ryuji Ito and Takashi Sasaki.

[7] Katsumata made his professional wrestling debut at Judgement on March 21, 2014 in a five-minute time limit dark match against Suguru Miyatake which ended in a draw.

[8] During his time in DDT Pro-Wrestling, he participated in notable matches such as a 34-man tag team match in which he teamed up with Bernard Ackah, DJ Nira, Daisuke Sasaki, Kota Ibushi, Suguru Miyatake, Gota Ihashi, Michael Nakazawa, Saki Akai, Kudo, Masa Takanashi, Yukio Sakaguchi, Akito, Harashima, Yasu Urano, Super Sasadango Machine and Tomomitsu Matsunaga to defeat Brahman Kei, Brahman Shu, Gorgeous Matsuno, Antonio Honda, Konosuke Takeshita, Tetsuya Endo, Hoshitango, Kota Umeda, Makoto Oishi, Mikami, Shuji Ishikawa, Kazuki Hirata, Sanshiro Takagi, Toru Owashi, Shigehiro Irie, Soma Takao and Yoshihiko at New Year's Gift Special 2015.

[9] He also won the Ironman Heavymetalweight Championship for the first time in a battle royal at Saitama Super DDT on February 15, 2015, dethroning the previous champion, Kubo Yumakoto.

[13] At Yukemuri Natural Hot Spring Pro Wrestling on February 28, Kastumata won the DDT Extreme Championship in a three-way Falls Count Anywhere 45-minute Iron Man match also involving the champion Sanshiro Takagi and Batten×Burabura.