[2] Nishimuro won her first Japan Curling Championships title in 2005 with teammates Yukako Tsuchiya, Tomoko Sonobe, Chiemi Kameyama and Mitsuki Sato.

They then beat New Zealand in the semifinal and China's Wang Bingyu in the final to win the gold medal.

[6] Nishimuro would not win another national title until 2018, where as the alternate for the Tori Koana team, they defeated the Ayumi Ogasawara rink in the championship final.

[7] Nishimuro previously threw fourth stones on the Fujikyu team from 2015 to 2017, earning two bronze medals and one silver at the Japanese championship.

During the 2018–19 season, Team Koana were named as the Japanese representatives at the third leg of the 2018–19 Curling World Cup.