As for the Ikkitousen Strong Climb, he made his only appearance at the 2022 edition in which he competed in the A Block against Yasufumi Nakanoue, Hideyoshi Kamitani, Yuji Okabayashi, Takuya Nomura and Kota Sekifuda, scoring a total of two points.

[8] In the Saikyo Tag League, Kato made his first appearance at the 2019 edition of the tournament in which he teamed up with Akira Hyodo in the A Block where they failed to score any points after competing against the teams of Shigehiro Irie and Yuji Okabayashi, Okami (Daichi Hashimoto and Hideyoshi Kamitani), Kazumi Kikuta and Ryuichi Kawakami, Daisuke Sekimoto and The Bodyguard, Ryota Hama and Yasufumi Nakanoue, StrongHearts (El Lindaman and T-Hawk), and Astronauts (Fuminori Abe and Takuya Nomura).

In the Block A, they fought against the teams of Astronauts (Fuminori Abe and Takuya Nomura), Yasufumi Nakanoue and Andy Wu, Yankee Two Kenju (Isami Kodaka and Yuko Miyamoto), Kohei Sato and Kazumi Kikuta, Kota Sekifuda and Tomato Kaji, Masaya Takahashi and Masked GO!GOGO, Ryuji Ito and Jaki Numazawa, and Daisuke Sekimoto and Kazumasa Yoshida.

At AJPW Summer Explosion Series 2019 on September 3, he teamed up with Akira Hyodo and Yuki Ishikawa in a losing effort against Atsuki Aoyagi, Dan Tamura and Yusuke Okada.

[12] Kato briefly returned to the promotion three years later and competed at AJPW Excite Series 2022 on February 23, where he teamed up with Kazumasa Yoshida in a losing effort against Dan Tamura and Ryuji Hijikata.