During her time in AEW, Shida has been a three-time AEW Women's World Champion. She also held the record for the longest reign in the championship's history at 372 days and tied with most reigns as champion with 3.
At Double or Nothing, Shida faced Nyla Rosa for the AEW Women's World Championship. She was able to win the match and the championship. This was Shida's first championship in AEW.[5] Shida would successfully defend the title again multiple opponents throughout the year. After a reign of 372 days, the longest reign in the championship's history, Shida was defeated by Britt Baker at Double or Nothing on May 30, 2021.[6]
Shida would then enter the Owen Hart Foundation Women's Tournament. On the May 6, 2022 episode of Rampage, Shida defeated Julia Hart in the to first round.[7] However, she had to drop out of the tournament and was replaced by Kris Statlander because she was in Japan at the time and couldn't re-enter the country.[8]
On the August 2, 2023 episode of Dynamite, Shida would defeat Toni Storm and win her second AEW Women's World Championship.[9] At All In, Shida lost the title to Saraya in a four-way may that also featured Britt Baker and Toni Storm.[10]
On the October 10 episode of Dynamite, Shida would win the AEW Women's World Championship back from Saraya. This was Shida's third championship win which broke a record for most reigns as champ.[11] Shida would lose the title to "Timeless" Toni Storm at Full Gear.[12]