Sykes, Leon

レオン・サイクス

Leon Sykes is a world-renowned record producer from the United States, as well as a key figure in the music industry's criminal underworld. He serves as the main antagonist in the manga and anime series.
He crosses paths with Ryusuke Minami on several occasions, typically to advance his own interests and resolve lingering issues; this involves either a priceless guitar that Ryusuke stole long ago or a potentially industry-shaking demo tape in Ryusuke's possession. Both have grown quite cautious of one another, with Ryusuke recognizing Leon's dangerous nature and Leon harboring a strong dislike for Ryusuke's treachery.
Later in the narrative, he becomes fixated on Yukio "Koyuki" Tanaka, after observing his exceptional vocal talent and stage presence.