Ken (born November 28, 1968, in Maibara, Shiga) is a Japanese musician and singer-songwriter, best known as the guitarist of the rock band L'Arc-en-Ciel. After he joined them in 1992, they went on to sell over 40 million records, making them one of the best-selling music artists in Japan. He has written a breadth of L'Arc-en-Ciel's material, including "Vivid Colors", "The Fourth Avenue Cafe", "Niji", "Kasou", "My Heart Draws a Dream", "Daybreak's Bell" and "Chase". Ken was also the vocalist and guitarist of the rock trio Sons of All Pussys (also known as S.O.A.P.), and has released a solo album entitled In Physical.
Source: “Ken (musician)”, English Wikipedia (CC BY-SA 4.0), excerpt