For a manga based on a mobile game, I think the transition between formats has worked incredibly well here. The story is condensed in a way that makes sense for the plot, pacing, and newcomers and the incorporation of a proper main character with his own backstory and personality is actually an improvement on the source material. As someone who loves the game, one of its downsides is how you, the player, interact with the story and the characters. Even though your presence initially is what gets the story going, you almost feel sort of needless as it goes on and everyone talks around you more than to you. Instead, the manga gives Yu more weight and tangibility, which is necessary when going from an interactive game to a physical book that hinges on having personable, engaging leads.

The art is absolutely spot on, to the point where I had to double check whether Yana Toboso was doing it. Sumire Kowono does a wonderful job of matching Toboso's style, while also giving the world a new sort of dimension. It allows us to see these characters be more expressive and dynamic in comparison to their limited character models in the game. I'm really looking forward to seeing certain story beats played out in manga form, now that we can truly see the magic and power of the characters in action. 

I would say this manga is perfect for those that are curious about the story elements of the game, but are not suited to its mechanics, such as constantly grinding to level up character cards that is necessary for you to progress.