Ryusei Shido (士し道どう 龍りゅう聖せい, Shidō Ryūsei?) is a contender of the Blue Lock, who currently plays for France's Paris X Gen.

Shido, unlike most forwards, has no concrete dream of becoming the world's best striker. He instead seeks to enjoy life to the fullest by playing football.

Out of the original 300 forwards chosen to be a part of the Blue Lock Project, Shido is an ideal candidate for the type of striker Ego strives to create. After the match against the Japan U-20 team, Shido ranked as one of the top players in Blue Lock.