Rina Koike (小池 里奈, Koike Rina) (born September 3, 1993, Tochigi Prefecture, Japan) is a Japanese gravure idol and actress affiliated with Twin Planet. Koike first debuted as a junior idol in 2003. As an actress, Koike has appeared as Sailor Luna in Pretty Guardian Sailor Moon (2003) and Shizuka Nomura in Kamen Rider Kiva (2008).
Source: “Rina Koike”, English Wikipedia (CC BY-SA 4.0), excerpt