Are Seo Eunkwang and Jonah Matranga both guitarists?
Seo Eunkwang Seo Eun-kwang (; born November 22, 1990), also simply known as Eunkwang, is a South Korean singer, entertainer, and the leader and main vocalist of the South Korean boy group BtoB.
Masahiro Matsuoka Masahiro Matsuoka (松岡 昌宏 , Matsuoka Masahiro , born January 11, 1977) is a Japanese drummer and actor. He is a member of Tokio, a Johnny Entertainment musical group. His nicknames are Mabo and Maa-kun. He starred as Shinichi Ozaki in ., and comedy series "Yasuko to Kenji".