Rina Koike is a Japanese gravure idol born in Tochigi, Japan on September 3, 1993. Her blood type is O, and she is 155 cm tall, Rina’s body measurements are: Bust: 73 cm, Waist: 56 cm and Hips: 82 cm. Koike started a junior idol career with the DVD Big Brother at age 10, when she was in 4th grade. Koike also works for Very Berry Production as a model. Rina had a role on the live-action version of Sailor Moon, Pretty Guardian Sailor Moon. She plays the character Sailor Luna, as Luna transforms to a young girl later on in the series.