UVERworld provides opening theme for anime The Heroic Legend of Arslan (Arslan Senki, アルスラーン戦記) with new single Boku no Kotoba de wa nai Kore wa Bokutachi no Kotoba  (僕の言葉ではない これは僕達の言葉).  Their 27th single includes three new songs on three editions hitting stores on *May...