Waka Ninimiya is a wrestler for the BATTLE organization. She debuted in December of 2017, and has the nickname "Miss Perfect."
In her first year as a competitor, Ninomiya won the 2018 Extreme Tournament. However, in her title match she lost to Misa Suzumi, becoming the first Extreme Tournament winner to lose in her title match.
|Extreme Tournament Champions|
|2014: Tsugumi Muto • 2015: Maria Wakatsuki • 2016: Yui Misaki • 2017: Misa Suzumi • 2018: Waka Ninomiya|