Julián Ray, a French exchange student from a wealthy noble family residing in Genoa, Italy, excels as the ace striker and leader of the prestigious youth football team San Podesta Junior. His exceptional technical skills, speed, and devastating signature "Julian Shoot" technique fuel his intense patriotism, driving him to bring honor to France through football.

Initially radiating arrogance and dismissiveness—particularly toward protagonist Hikaru Yoshikawa, whom he deems inferior—Julián embodies privilege and a sheltered upbringing. His superiority complex surfaces in sarcastic remarks and a conviction that football triumphs validate personal and national prestige. This competitive fire ignites a fierce rivalry with Hikaru during the Genoa Cup tournament.

After securing victory for San Podesta Junior against Hikaru's Columbus team in the Genoa Cup final, Julián plunges into a crisis of confidence. The match's intensity and his perceived shortcomings trigger severe demotivation, leading him to abandon football. He flees Genoa, leaving only a note for his younger sister Catherine that reveals his emotional turmoil and isolation, forcing him to confront his identity beyond athletic success.

Encouragement from rivals like Cesare Gatti and Hikaru's unwavering support gradually reignites Julián's resolve. He returns to football with a transformed perspective, shedding much of his former haughtiness. Recognizing Hikaru's leadership and vision, he accepts an invitation to join the multinational team Jupiter Wings, shifting from rivalry to collaboration alongside former adversaries.

Within Jupiter Wings, Julián evolves into a reliable teammate and supportive figure. His relationship with Catherine grows kinder and more protective, reflecting broader emotional growth. His bond with Hikaru solidifies into deep mutual respect and friendship, anchored in shared dedication to football and collective pursuit of glory in international tournaments like the Junior Champions Cup.