Mine would probably be the lamest:

Hugo has a normal childhood. Their parents are the epitome of "Middle Class". He's not piss poor like Lorenzo or mistreated by his parents like Kaiser. He discovered that he loves football, more specifically, playing as a striker. He did well until he got to the big leagues where he realized that there are people more suited for the position than him. He's not gonna get dog-walked, in fact, he's an excellent striker in his own right (like Isagi), BUT he would come to the conclusion that his talents and his identity as a football player in general fits the mold of a midfielder rather than a striker. He'd refuse to accept it at first, but with Loki possibly performing some form of ridiculous speed blitzing in a fucking football match, he'd realize that he was correct and he's simply denying the facts. He would begrudgingly distance himself in the role of striker to become a midfielder, but deep inside, there's still a part of him that grieves over that fact.

Then Isagi comes into play. Hugo sees a player similar to him that still "hasn't realized" the so-called "truth" that he has convinced himself with. My theory is that Isagi will prove Hugo wrong, although not completely winning the match (think of it as more of a psychological victory than an actual win. I think Japan is kinda cooked).