ONE OK ROCK

they are japanese gropu they are j-rock. this is the official page or website: 

http://www.oneokrock.com/index.html

Members

• Taka (森田 貴寬 Moriuchi Takahiro^?, born April 17, 1988 in Tokyo) is the main vocalist of the group. Prior to debuting with One Ok Rock, he was a member of the boy band NEWS. He is the son of Shinichi Mori.
• Toru (山下 亨 Yamashita Tōru^?, born December 7, 1988 in Osaka) is the guitarist of the group. He also contributes some vocals. He was previously a member of the hip-hop dance group Heads with Ryota.
• Ryota (小浜 良太 Kohama Ryōta^?, born September 4, 1989 in Osaka) is the bassist of the group. He was also previously a member of the hip-hop dance group Heads with Toru.
• Tomoya (神吉 智也 Kanki Tomoya^?, born June 27, 1987 in Hyogo) is the drummer of the group.

Former members

• Alexander Onizawa (born March 19, 1988 in San Francisco) was the guitarist of the group alongside with Toru, until he left in May 2009 after being arrested on charges of groping.