Iida made her debut at World Wonder Ring Stardom on January 14, 2019, at Stardom's 8th anniversary show where she faced Natsuko Tora in a losing effort.[4] After the match, Iida joined "J.A.N." (Jungle Assault Nation), a unit consists of Jungle Kyona, Kaori Yoneyama, Ruaka, and Tora.[4] On March 10, Iida received her first title match when she challenged Utami Hayashishita for the Future of Stardom Championship, but was unsuccessful.[5] On April 14, during the annual draft, Kyona lost to a five-way against four other faction leaders where the loser of the match must disband their own unit, therefore, J.A.N. was forced to disband.[6]Mayu Iwatani, the leader of "Stars", chose Iida to join her unit.[6]
On February 24, 2020, Iida faced her trainer and former World of Stardom ChampionKagetsu in a losing effort during Kagetsu's retirement show, which took place outside of Stardom.[7] On July 17, Iida faced Maika and Saya Kamitani in a three-way match for the vacant Future of Stardom Championship, which was won by Maika.[8] On November 15, Iida challenged Maika for the Future of Stardom Championship, but was unsuccessful.[9] After the match, Iida indicated she wanted one more match for the title, thus continuing her rivalry with Maika.[9] On December 20, Iida defeated Maika to win the Future of Stardom Championship in a three-way, which also involved Kamitani.[3]
On January 17, 2021, on Stardom's 10th anniversary show, Iida had her first successful title defense, when she defeated Unagi Sayaka to retain the Future of Stardom Championship.[10] On May 10, The championship was vacated after Iida suffered a torn ACL and LCL injuries.[11][12]