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Okamoto Rie, born on January 9th, 1984, is a Japanese voice actress from Akita Prefecture. She left Power Rise at the June 2019. On November 1, 2020, she entered a business partnership with Green Note, a seiyuu agency created by Sendai Eri, until June 2021. She is currently affiliated with and the founder of Hal Qualia.

She is better known under the alias "Ayumi Sarah" for her work in adult games.