I'm sorry, but this is a horrible anime and an even worse adaptation. In terms of the adaptation, everything has been changed and it's extremely rushed to the point that battles only show 1-2 points scored and then just cut to the end with the final score... Not only that but they changed the main character. Yup, the main character of the visual novel and his background story that drives the game is practically non-existent in the anime. At first, it seems like they decided to make Asuka the main character, but then they just bounce around and don't seem to focus on anyone at all while making Masaya (the original protagonist of the VN's) just a very small background character. Asuka seems like a reasonable choice for the protagonist since she's the rising star of the sport, but instead they dont focus much on her either. Rushing through the story and not focusing on a character makes everyone bland and boring. None of the characters are developed enough through the anime and there are major contrasts in their character between the VN and the anime.
On terms of it being an anime, it still sucks. It is so rushed, especially the battle scenes, awesome VN fights only last like 30 seconds and are quite underwhelming. For example, Asuka pulls off an awesome move, but instead of using flashy art and intense music to show just how significant it is, they just focus on different characters saying wow. That brings on another point, the battle music is also way too calm and doesn't create any kind of tension. Speaking of tension, since the show is so rushed, there is zero build up to their opponents which leads to the battle itself having no real impact, meaning or gratification when the good guys do something great.
The story is non-existent... seriously it feels like there is none which is pretty incredible because the VN has so many different story options they could have gone with. Overall, it's a bit boring. The lack of story direction and rush through the VN content just makes it very confusing because it cuts out most of the major interactions between characters and the things that promote their growth.
I can't recommend this anime. Even if you haven't played the VN, you will be disappointed because it's just a bad anime in general. Do yourself a favor and just play the game. It's easily 100x better than this letdown.