In 2013, Kato began training in California, coached by Anthony Liu as well as her aunt.
Kato began the 2014–15 season by winning two senior medals, silver at the Asian Trophy and bronze at a Challenger Series event, the U.S.
[3] Making her Grand Prix debut, she finished 5th at the 2014 NHK Trophy and earning a personal best of 117.51 in the freeskate.
For the 2015-16 Grand Prix series, Kato was assigned to compete at 2015 Rostelecom Cup.
[4] She started her season by finishing 5th at the 2015 CS Ondrej Nepela Trophy.