Also known as: Yamachang, やまちゃんぐ, やまのうち まさはる, 山内 真治
Masaharu Yamanouchi is a Japanese producer, A&R and coordinator. He was born in 1968 and is the Chief producer for Aniplex, working there since 2010. Before that, he worked for SME Records. As a lyricist, he uses the pseudonym Yamachang (やまちゃんぐ).
