Biography
Kazunari Ninomiya is a Japanese actor and singer. Born on 17 June 1983 in Tokyo, he joined the talent agency Johnny & Associates in 1996 and debuted as a member of the boy band Arashi in 1999. He is also known by the nickname Nino.
Ninomiya began acting before his singing debut, appearing in the stage play Stand by Me. He is known for his film roles including Private Saigo in Letters from Iwo Jima (2006), the voice of Kuro in Tekkonkinkreet (2006), Kei Kurono in the Gantz films (2010–2011), and the Lost Man in Exit 8 (2025). He has also appeared in numerous Japanese television dramas and voiced Koro-sensei in the Assassination Classroom films (2015–2016).

