[1] She won the gold medal in the 65 kg event at the 2022 World Wrestling Championships held in Belgrade, Serbia.

[2][3] She won the silver medal in the women's 65 kg event at the 2021 World Wrestling Championships held in Oslo, Norway.

[6] Morikawa won the gold medal in her event at the 2022 Asian Wrestling Championships held in Ulaanbaatar, Mongolia.

[7] She also won the gold medal in her event at the 2022 U23 World Wrestling Championships held in Pontevedra, Spain.

[9] She defeated Kendra Dacher of France in her bronze medal match.