Miyagi often competed in events held by Ice Ribbon in partnership with various other promotions. On November 11, 2020, the promotion held the Ice Ribbon Vs. Shinjuku 2-chome Joshi Pro Wrestling event with Miyagi competing in the afternoon show in a 14-man battle royal won by Totoro Satsuki and also involving Akane Fujita, Asukama, Shinobu, Maika Ozaki, Ram Kaicho and others.[10] At the evening show she competed again in the same kind of battle royal with the same participants, this time won by Asukama.[11] At Ice Ribbon/AWG Ice Ribbon & Actwres girl'Z Joint Show on November 16, 2020, she teamed up with Michiko Miyagi to defeat Misa Matsui and Risa Sera.[12]
Miyagi often competed in men's promotions as joshi talent. At AJPW Super Power Series 2016 - Tag 3: SKIP Beat Kawaguchi Vol. 1, an event promoted by All Japan Pro Wrestling on May 22, 2016, she teamed up with Tsukushi in a losing effort against Azure Revolution (Maya Yukihi and Risa Sera).[17] At BJW Summer Ueno Pro-Wrestling Festival - Part 9, an event promoted by Big Japan Pro Wrestling on August 23, 2016, she teamed up with Maruko Nagasaki to defeat Tequila Saya and Tsukushi.[18] At Pro Wrestling FreedomsOsaka Fans Thanksgiving Day on September 3, 2017, she teamed up with Idea in a losing effort against Hamuko Hoshi and Yuya Susumu.[19] At Pro Wrestling Zero1's Tenka-Ichi Junior Tournament 2018 on November 18, she picked up a victory against Giulia.[20] After going off-contract with Ice Ribbon in January 2022, Miyagi joined the new formed stable Prominence and started working mostly as a freelancer ever since. In 2022, Miyagi began wrestling under the ring nameMochi Natsumi, with Natsumi being her real surname.[21] At GLEAT G PROWRESTLING Ver. 15, an event promoted by Gleat on January 26, 2022, she teamed up with stablemates Akane Fujita and Suzu Suzuki to defeat Madeline, Michiko Miyagi and Yukari Hosokawa as a result of a six-man tag team match.[22]
Pro Wrestling Wave (2015–present)
Another promotion which Miyagi has competed in is Pro Wrestling Wave. She made her first appearance at WAVE Young Oh! Oh! 14 on January 30, 2015, where she teamed up with Sawako Shimono to defeat Fairy Nihonbashi and Yua Hayashi.[23] Miyagi participated in various of the promotion's signature events such as the Catch the Wave tournament. She made her first appearance at the 2017 edition of the event, placing herself in the "Other Than" Block and scoring a total of six points after going against Sareee, Rin Kadokura and Saki.[24]