Comparing to the main series, the story provides a different perspective and contains gambles in which audience can hardly have chances to see in the main series, which is refreshing. For instance, both the coupling party and treasure hunt gambles have interesting concepts and strategies, and it is entertaining to see how the participants (espcially the main trio) work out how to beat the game. You would never see Jabami Yumeko, the protagonist of the main series, get engaged in this kind of gambles. Outside of the story, the execution of animation is good with appropriate usage of CGI. The opening and ending are very memorable, in both the animation and music.
Despite all these, there are still some main adaptation problems. One main problem is that the studio directly skips the first gamble, probably because it has the same nature as the first gamble (Yumeko vs Mary) in the main series, both of them featuring an over-confident bully who gets beaten by a transfer student. However, the first gamble is crucial in building up the bond between Mary and Tsuzura, the later one being the former's friend, showing that even if she is unfamiliar with the rules on new campus, poor and does not have good impressions on Tsuzura since she met her in primary school, she would still stand up and help her friend, encouraging her to be braver. Unfortunately, this part has been completely ignored by briefing with simple words, and Tsuzura is already calling Mary as her prince at the beginning of the anime, which feels both confusing and forced. If there were more building up between their relationship, it could feel less forced, and one of the main themes "friendship" could be emphasized.
Building up of the atmosphere is the main problem of the adaptation, even for the gambles. As long as the main focus of Kakegurui Twin is different from the main series and it is meant to be made as a more typical Shounen friendship work with less stressing gambles, there should have been more tension in the adaptation. When I watched the anime, the scenes always reminded me of its counterpart live action adaptation, which has much more tension and the audience could really feel the threats of losing the games with the darker tone of environment as well as more exaggerating actions. In the anime, however, the tension somehow gets missed and most of the time, it feels like they are just playing a game without prices to pay. Even if they say there's a price after losing, the atmosphere does not feel so.
And regarding inconsistence of Mary's personality between Twin and main series, since the Twin manga is still ongoing, we could not comment if the inconsistence is bad writing as the ending of the manga, which could change Mary's personality, is still unrevealed.
Overall, I would still recommend Kakegurui fans watching this anime, but I feel that the live action adaptation does a better work in capturing the tension. As for non-fans, I do not think the anime is suitable as a starter to the franchise and they could watch it only when they are interested in the characters and gambles.
