This anime was almost as difficult to watch as it was to find the 'write a review' button on this website.
It's a sports anime, but there's barely any actual playing involved.
I have no idea who the characters are or what makes them tick. They have no character development whatsoever, other than "yay power of friendship, we're having so much fun" with zero substance.
At one point I thought this was going to turn into a 'ice hockey team also is idol group' affair, but even that doesn't really come to pass. There was a character who left early in the series and later came back, but I had entirely forgotten they even existed as they didn't add anything useful to the non-existing plot.
Overall, the whole series feels like a set-up to sell their game, which subsequently failed shortly after launch. This about sums up the experience.
It wasn't even terrible, it was just boring.