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Rina Akiyama is a Japanese actress, gravure idol, and tarento from Tokyo. Her most notable appearances are in two Kamen Rider series, namely Kamen Rider Agito and Kamen Rider Den-O. She also has a cameo appearance in Metal Gear Solid 3: Snake Eater in which she is featured in a poster on one of the levels. She has also been named to have the "Best Butt in Japan" in 2007, which earned her the nickname "Oshirina" (オシリーナ, Oshirīna), a portmanteau of the words "oshiri" (butt) and "Rina". Wikipedia