Kazunari Ninomiya (born June 17, 1983), often called Nino, is a Japanese idol, singer, songwriter, actor, seiyū and radio host. He is a member of Japanese boy band Arashi and is best known to movie audiences for his portrayal as Private Saigo in the 2006 Clint Eastwood war film Letters from Iwo Jima. Ninomiya began his career in the entertainment industry when he joined the Japanese talent agency Johnny & Associates in 1996 at the age of 13. Prior to his debut as a singer with Arashi in 1999, Ninomiya started an acting career when he was cast…