Age
16
Birthday
September 9
Itoshi Rin ( 伊藤凛, Rin Itoshi) can be considered the deuteragonist of the Blue Lock (Manga). Rin's past before Blue Lock is largely unknown but he is the younger brother of Sae Itoshi and is regarded as the best player in Blue Lock until he is officially confirmed to be the #1 player by Jinpachi Ego. Rin's main goal is to become the world's best striker and a task to complete before reaching that goal is defeating his older brother Sae. Out of the original 300 forwards chosen to be apart of the Blue Lock Project, Rin is an ideal candidate for the type of striker Ego strives to create and thus Rin is the star player and center forward of the Blue Lock 11's formation against Japan's U-20 Representatives.

Blue Lock
After reflecting on the current state of Japanese soccer, the Japanese Football Association decides to hire the enigmatic and eccentric coach Jinpachi Ego to achieve their dream of winning the World Cup. Believing that Japan has lacked an egoistic striker hungry for goals, Jinpachi initiates the Blue Lock—a prison-like facility where three hundred talented strikers from high schools all over Japan are isolated and pitted against each other. The sole survivor of Blue Lock will earn the right to become the national team's striker, and those who are defeated shall be banned from joining the team forever. Selected to join this risky project is Yoichi Isagi, a striker who failed to bring his high school soccer team to the national tournament. After choosing to pass to a teammate who missed instead of scoring on his own, he could not help but wonder if the results would have been different had he been more selfish. Using this golden opportunity given by the Blue Lock Project, Yoichi aims to clear his doubts and chase his ultimate desire—to become the greatest striker in the world and lead Japan to World Cup glory.