I started this anime because I was bored and I think that is the best decision I made. I loved the story so much. The outcomes were always so unpredictable and even if the 2 siblings kept repeating "Blank never loses", there are times where I got nervous for them. I definitely enjoyed the whole serie. The plot idea was new and really entertaining. I liked the humour they threw in as well as all the plot twists and the development of the story. My only regret is that it was too short, so I hope new seasons will follow soon.
The art is really colorful. It fits well with the theme of games and the drawings were quite nice. Shiro is a cutie pie. All the games they played had some extraordinary features and I liked the effects and animation they used. The game of shiritori is a great example. The way they made things appear of disappear as well as the characters' reaction to each other's answers made that really fun to watch.
The sound is fine. I liked the opening theme. But I have to be honest, as I was watching, I skipped the opening and ending themes most of the time because I just wanted to see what happens next in the story.
I loved the characters. Sora and Shiro were the perfect combination to be the unbeatable gamer unit [Blank]. Their personality complement each other and their sibling relationship and complete trust in each other is admirable and adorable to watch. Steph is seen more as a comic relief most of the time and the other characters each have their own wise tricks and made the games interesting. I could never guess what would happen next and seeing [Blank] battle against other smart opponents made the challenges worthwhile.
So overall, I loved this anime very much. I hope there will be more in the near future. This serie has completely won me over.