Characters
Yuuga: Yuuga is a pure heart good boy shonen protagonist who wants everyone to smile and things Master Duels or Goha Duels as the show calls them have become stale, although its never explained way and so he invents Rush Duels. And he is by far in my opinion the most boring Yugioh protagonist by far. Also he's super smart and just knows stuff and it's never explain how he worked it out.
Rook: Rook is probably the main character with the most potential to grow, he also my least favourite of them. He's rather up himself, but not in a fun amusing way. Generally I think he's character you either like or dislike.
Romin: The main female character and rather a good character, or at least for the show she's entertaining enough, her duels are the most entertaining in the show also she uses psychic monsters and will give praise to any main character who doesn't use Spellcaster, Dragons or Warriors. Her growth so far has been the best of the main characters .
Gokuto: I love Gokuto he is great, he's the student council president and a rather serious character at least compared to Yuuga and Rook. He's works well enough as character. I just like serious characters.
Roa: Roa has the personality of a rival, although I don't think he's technically the rival, but he's great and needs to appear more, his similar to Rook but nowhere near annoying.
Otes: Otes is the most interesting thing about Sevens by far, the person who inspired Yuuga, he's mysterious and interesting and let's be real probably the only reason I continuing to watch this show.
Sebestian: Sebestian is the only character in this show who is actually funny.
Rush Duels: The biggest difference between this series and the others. and there fine, like everything else. Basically the original Yu-Gi-Oh but much faster, but I'm going to be honest the thing I like most about the original is the characters not the dueling (Expcet Duelist Kingdom, because that stuff was crazy and bonkers).
Rush Duels are my biggest problem but not how you think, the game is fine but how it is treated is not. Basically you cannot dislike Rush Duels. IF you don't like Rush Duels you are antagonistic and have never played Rush Duels and once you play you will love Rush Duels and Yuuga forever. Also you can't dislike Yuuga, like everyone seems to have just have absolute faith in him.
Like true you shouldn't judge something before you try it, but just because you try it doesn't mean you'll like it, and the show actively seems afraid to make a character who doesn't like Rush Duels or Yuuga or is even neutral on them. And I think a character like that would go a long way.
