At AWG Act In Osaka on December 13, 2020, Matsui teamed up with Michiko Miyagi in a losing effort against Hikari Shimizu and Saki in the second rounds of the inaugural AWG Tag Team Championship tournament after previously defeating Sakuran Bonita and Waka Tsukiyama in the first rounds on November 24, 2020.

At AWG Act 45 on January 8, 2020, she wrestled in a battle royal won by Rina Amikura and also involving other notable opponents of the roster such as Himeka Arita, Momo Kohgo, Tae Honma, Miyuki Takase and others.

At AWG ACTwrestling Step 28 New Year Special, she competed in a captain's fall tag team match in which she teamed up with stablemates Asahi, Cat Mask Calico and Naho Yamada as the captain in a losing effort against Update Plus (Kanamic, Mii, Nagisa Shiotsuki and Sakura Mizushima).

[12] On the first night of the AJPW New Year Giant Series 2024 from January 2, Matsui teamed up with Natsumi Sumikawa to defeat Miku Aono and The Great Asako.

[13] In April 2024, Matsui was announced as part of the newly created promotion of Dream Star Fighting Marigold.