She plays for Greek club AEK Athens and the Japan women's national volleyball team.

[2] Momii was born in Sagamihara, Kanagawa Prefecture.

Momii joined JT Marvelous after graduating from Hachioji Middle School in February 2019.

In 2021, she was selected to the Japanese national team for the first time in the Olympics.

This biographical article relating to volleyball in Japan is a stub.