It's been a while since I've seen this anime but I'll give out based on what I remember.
This anime focuses on middle schoolers playing a card game known as "Vanguard" and they play at a card shop then at tournaments. I love the plot and aspect of it and got hooked on it immediately within the first 5 minutes of it. If you've enjoyed this, there are 2 other seasons to check out. I'll do seasons 2