Staggeringly unlikeable protagonist.
Protagonist starts off as zero. Reasonable. Common story approach, almost cliche.
Then he gets his radioactive spider bite, letter from Hogwarts, etc. moment. Goes zero to hero literally overnight. Not interesting but whatever.
Guy who starts as a humble nice guy nerd immediately becomes an arrogant hot-head. If he had any more interaction with the Sleeper world I’d call him a bully. As is the soccer thing is weird and stupid. Why is he playing these 10-0 games? He’s disgustingly thirsty for social attention and status, even though his activities in the Sleeper world are glossed over. His classes or any Sleeper friends are never discussed. It makes sense cause he was originally an ostracized loser, but his obsession is played as normal. It could be interesting if he was shown as walking the path to becoming a bad guy, but everything he does is approved of by the “people we like” crowd.