Kohama Ryota better known as his stage name Ryota, is a bassist in the Japanese rock band One Ok Rock.
He was in the hip-hop dance group Heads along with Toru from One Ok Rock before they disbanded in 2002.
In 2004, Toru and Ryota continued their activities as Ground 0. In 2005 when Toru tried to explore his acting and took the main role in TV series Shibuya Fifteen, Ryota also played in this drama as a minor character.
In the same year, he was invited by Toru to form a rock band, alongside their upperclassman Alex and Toru's friend Koyanagi Yuu.
Kohama is the brother-in-law of Canadian singer Avril Lavigne. Edit Biography