Kawashima Yuuka

 (河島佑香), married name Ushio Yuuka (潮佑香) is a former member of Perfume.

On February 15, 2020, it was announced she had gotten married to Ushio Keita, they had met 10 years prior.

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Kawashima Yuuka, also commonly called Kawayuka, is a former member of the Idol group Perfume. Before the group's debut in 2001, Kawayuuka quit the group in order to focus on studying. After quitting the group she later joined Pinkies, then Risky, and lastly espoir before attempting to go in alone as a solo idol named Yuka.