At K-DOJO Chiba Festival 2019, an event promoted by Kaientai Dojo (K-Dojo) on May 2, 2019, he teamed up with fellow Sento Minzoku stablemates Ryuichi Sekine and Isami Kodaka and unsuccessfully challenged Ayato Yoshida, Tank Nagai and Tatsuya Hanami for the Chiba Six Man Tag Team Championship.

At DDT/Saki Akai Produce DDT Collection on March 14, 2018, Shimomura participated in a 27-person battle royal in which the winner was granted the position of general manager for one night.

Shimomura came unsuccessfully in front of the winner Kazuki Hirata and other notable participants such as Antonio Honda, Akito, Danshoku Dino, Konosuke Takeshita, Maki Itoh, Yuko Miyamoto and others.

His single appearance was at Ultimate Party 2019 on November 3 where he teamed up with Minoru Fujita, unsuccessfully challenging the champions Damnation (Daisuke Sasaki and Soma Takao), All Out (Akito and Shunma Katsumata) and Iron Priest (Fuma and Yusuke Kubo) in a Four-way hardcore match for the KO-D Tag Team Championship.

[16] At BJW Osaka Surprise 53 ~ Zero Gravity 2021 on August 8, Shimomura teamed up with Minoru Fujita and Isami Kodaka to win the UWA World Trios Championship for the second time after defeating Andy Wu, Hub and Ultimate Spider Jr.[17] On October 20, 2023, Shimomura was suspended by Basara for a year due to inappropriate conduct of an undisclosed nature.