Kotaro Koizumi (小泉 孝太郎, Koizumi Kōtarō, born July 10, 1978 in Yokosuka, Kanagawa) is a Japanese actor and the eldest son of the 56th Japanese Prime Minister, Junichirō Koizumi, and Kayoko Miyamoto.
He studied economics at night classes of Nihon University, but dropped out.
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