"私は高品質のビデオゲームのリップをアップロードするだけです。" "I only upload high quality video game rips."
Previously known as GiIvaSunner, SiIvaGunner is a YouTube parody channel that uploads video game music, but the music itself is remixed in some fashion (the uploads being dubbed high-quality rips). It is visually represented by the character of the (largely) same name, SilvaGunner.
