Rina Akiyama (秋山 莉奈 Akiyama Rina) 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 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".
