She is the first LDP member to represent Iwate as a councilor since Motoo Shiina left the party in 1993.

[4] In 2012, she gave a speech to the United Nations General Assembly on the "Status and situation of women in Japan".

[5] She was elected in 2022, defeating incumbent Councillor Eiji Kidoguchi and three other minor party candidates by a margin of around 20k votes.

Regarding the matter, the executive director of Hirose's office said, "We had no idea that this was an organization with problems such as inspirational marketing and donations.

"[12] On the night of October 30, 2023, Hirose went with Canadian saxophonist Andy Wolfe from a restaurant in Shibuya to a love hotel in Kabukichō, and checked out the next morning.

]"[15][16] In July 2024, authorities searched Hirose's residence and office after she admitted fraudulently paying salaries to a secretary who performed no duties.