According to CageMatch.net, Asuka is 19-1 since arriving in October 2015, with her only loss coming in a Battle Royal. She is 6-0 at TakeOver specials. In addition, Asuka recently became the longest-reigning NXT women’s champ at 277 days and counting, as seen on WWE.com. Her techniques include various kicks and submission holds, leading to a reputation for a stiff wrestling style.

On the January 13, 2016, episode of NXT, Asuka competed in a number one contender’s over-the-top-rope battle royal for Bayley’s NXT Women’s Championship, which was won by Carmella. On the February 10 episode, Asuka saved Carmella from Eva Marie and Nia Jax after her loss to NXT Women’s Champion Bayley. Afterwards, Asuka had a staredown with Bayley, indicating that she wanted a shot at her title. After Asuka and Bayley defeated Marie and Jax in a tag team match on the March 16 episode, an NXT Women’s Championship match between the two was made official by William Regal. On April 1 at NXT TakeOver: Dallas, Asuka defeated Bayley by technical submission to win the NXT Women’s Championship for the first time. On June 8 at NXT TakeOver: The End, she successfully defended the title against Nia Jax. After Bayley earned herself a title rematch against Asuka, tensions between the two began to rise, leading to the match on August 20 at NXT TakeOver: Brooklyn II, where Asuka retained the title. On November 19 at NXT TakeOver: Toronto, Asuka successfully defended the NXT Women’s Championship against Mickie James, refusing to shake James’ hand afterwards.