[5] At the 2016 Brescia World Cup, she won a silver medal in the synchro event alongside Rana Nakano.

[7] She then competed at the 2017 World Championships held in Sofia and won a silver medal in the synchro event with Yumi Takagi.

[8] Additionally, she helped Japan finished fourth in the team competition and was the first reserve for the individual final.

[14][15] Later that year, she won a gold medal at the World Championships in synchronized trampoline alongside Megu Uyama.

[20] Then at the Valladolid World Cup, she won the bronze medal behind Chinese gymnasts Liu Lingling and Zhu Xueying.

[21] At the 2019 World Championships, Mori helped the Japanese women's team win the gold medal for the first time ever.

[26] She competed at the postponed-2020 Summer Olympics in her hometown, but mistakes in the qualification round led to a 13th place finish that kept her out of the final.

[1] She contemplated retirement after this performance but competed at the 2021 World Championships in Baku and helped Japan successfully defend its team title.