At a house show of World Woman Pro-Wrestling Diana from September 1, 2019, she teamed up with Tomoko Watanabe in a losing effort against Crysis (Jaguar Yokota and Megumi Yabushita).

[11] At a house show produced by Pro Wrestling Wave on December 25, 2019, Seira teamed up with Ayumi Hayashi and Himeka Arita to defeat Haruka Umesaki, Misa Matsui and Rina Shingaki.

[12] Seira won the 2020 edition of the Jaja Uma tournament by defeating Maria in the first rounds, Yurika Oka in the second, Mikoto Shindo in the semifinals and Manami in the finals on September 22, 2020, which took place at the Sendai Girls Burning UP!

[15] At Sendai Girls Road To GAEAism on October 1, 2021, due to being a Marvelous roster member, Seira teamed up with promotion mates Hibiki, Maria, Masha Slamovich, Mikoto Shindo, Mio Momono and Rin Kadokura to defeat "Team Sendai" (Chihiro Hashimoto, Dash Chisako, Kanon, Manami, Mika Iwata, Natsuho Kaneko and Yurika Oka).

[20] Seira made her in-ring return at All Star Grand Queendom on April 23, where she teamed up with Starlight Kid and defeated AZM and Mei Suruga.

[23] At Flashing Champions 2023 on May 27, Crazy Star teamed up with Maika to defeat Neo Stardom Army (Nanae Takahashi and Yuna Mizumori) and Hanako.

[30] At American Dream 2024 on April 4, Seira lost the High Speed Championship back to Saki Kashima in a three-way match that also included Ram Kaichow.