Sae Itoshi is an antagonist of the Blue Lock (Manga).
Sae is a prodigy football player who is regarded as the best player in Japan and is the older brother of Rin Itoshi. Sae is also a member of the Men's World 11 and is a member of the Real Madrid Youth team, regarded as one of the best youth players in the world.
His main goal before the start of the series was to become the best striker in the world and in turn the best player in the world but after leaving Japan and experiencing the professional league in Spain he changed his dream to becoming the best midfielder in the world.
At the start of the series, he is in Japan only to renew his passport but after happening to hear about the Blue Lock he decides to stay. He later joins the Japan U-20 to face off against the Blue Lock Eleven in the Japan U-20 match.
(Source: Blue Lock Wiki)
