It’s not exactly uncommon in an anime for the main character to be the most interesting one, but it is more of a rarity to have one who’s as chronically underconfident as Arata is in an action show. It surprises me that I’m actually enjoying the resulting contrast.
There’s a scene in Naoki Urasawa’s Happy! where the main character Umino, who’s gotten herself matched up against a player who should be by all rights an easy win, gets mixed up in a match-fixing gig. Due to her honest nature, she still tries to win the game, but finds herself stymied against an opponent playing much harder than she normally would, at a level that one informed observer remarks she’ll “never reach again” as a result of considerable pressure heaped on her from outside sources.
You know who else is under crushing pressure all the time? Mediocre manga authors.