Career
Ikee also swam at the 2015 World Aquatics Championships. She finished 19th in the 50 meter butterfly and missed qualification for he semifinals by 0.17 son In the 4 × 200 meter freestyle relay Ikee and her teammates reached the final where they finished in 7th place.
At the 2015 World Cup leg in Tokyo, Ikee broke the senior Japanese record in the 100-meter butterfly with a time of 57.56, and the junior world record in the 50-meter butterfly in 26.17 (both long course).