[9] She made an appearance in the Sendai Girls Royal Tag Tournament 2019 where she teamed up with to defeat Meiko Satomura and Syuri in the first-round, Alex Lee and Charli Evans in the semi-finals, but fell short to Dash Chisako and Hiroyo Matsumoto in the finals on December 11, 2019.

[15] At Ryōgoku Peter Pan 2017 on August 20, she won a Rumble rules match for the Ironman Heavymetalweight Championship also involving Mizuki, her trainer Cherry, Yuna Manase, Maho Kurone and others.

[17] She continued to make sporadic appearances for the promotion, such as at WAVE Hakodate event from September 16, 2019, where she participated in a 14-person battle royal also involving Hikaru Shida, Arisa Nakajima, Yumi Ohka and others.

[22] She would later make her official debut by frequently attacking Stardom's president Rossy Ogawa and other superstars such as Saya Kamitani and Starlight Kid under a reaper mask costume for weeks between June and July, 2022.

[23] At Stardom in Showcase vol.2 on September 25, 2022, Yuu worked into a non-canon storyline where she, Nanae Takahashi and Yuna Manase who teamed up as two masked reapers, defeated Syuri, and Queen's Quest's Utami Hayashishita and Lady C who were billed as Rossy Ogawa's "Bodyguard Army".

[24] At the 2022 edition of the Goddesses of Stardom Tag League, Yuu teamed up with Nanae Takahashi as "7Upp" and won the whole tournament by winning the "Blue Goddess Block" with a total of eleven points scored after competing against the teams of FWC (Hazuki and Koguma), MaiHime (Maika and Himeka), The New Eras (Mirai and Ami Sourei), BMI2000 (Natsuko Tora and Ruaka), 02 line (AZM and Miyu Amasaki), Kawild Venus (Mina Shirakawa/Waka Tsukiyama and Saki), and wing★gori (Hanan and Saya Iida).