[6][7][8][9][10] In April 2018, Umino main evented Lion's Gate Project 11, where he teamed with Yuji Nagata in a loss to Ayato Yoshida and Go Asakawa.

[14] At Dominion 6.9 in Osaka-jo Hall on June 9, Umino lost to IWGP United States Champion Jon Moxley.

[19] At Royal Quest on August 31, Umino teamed with Narita and Ryusuke Taguchi in a loss to Roppongi 3K (Rocky Romero, Sho and Yoh).

[28] Umino made his debut for Revolution Pro Wrestling (RevPro) at the New Beginnings event on November 9, 2019, in a loss to Kyle Fletcher.

[30][31] Umino also made his debut for Over the Top Wrestling (OTT) at the promotion's Stickin' Out event on January 5, 2020, where he lost to Scotty Davis.

[33] After an absence of over a year due to the COVID-19 pandemic, Umino made his return to wrestling at RevPro Live In Bristol 3 event in July 2021, defeating Dan Moloney.

[37] Umino would make his return to New Japan Pro-Wrestling, on April 16, 2022, at Windy City Riot, where he answered Jay White's open challenge but was defeated.

[43] On May 21 at Resurgence, Umino reunited with Jon Moxley, teaming with him and Yuta, to defeat Chaos (Kazuchika Okada, Rocky Romero and Tomohiro Ishii).

[46] In September, Umino teamed with Yuji Nagata and Master Wato to face off in a Best of Seven Series, against El Desperado, Ren Narita and Minoru Suzuki.

[48] In November, Umino continued his alliance with Narita, with the two teaming in the annual World Tag League, with the duo participating in the A-Block.

[51] Two days later at Wrestle Kingdom 18, Umino teamed with Kiyomiya once more to face Narita and Evil, but failed to win the match.

[59] On January 4, 2025 at Wrestle Kingdom 19, Umino unsuccessfully challenged Zack Sabre Jr. for the IWGP World Heavyweight Championship in the main event.