If you have the free time to watch this anime, it is most likely a better use of your time to learn another language for those time than watching this anime. TLDR: for me, this was one of the worst series I have ever watched. (I have never given any series a rating of 1 until this anime).
Story:
Somewhat overused setting. Princess and prince of dark and light trying to coexist, but they are constantly at war. You will understand the premise if you watch the first 5 minutes of this series.
The pacing is bad, and the ending is super rushed. If this series cut out the middle 5 episode, and used that 5 episode for actual story, maybe this rating would not be a 1. There were alot of random fillers that didn't offer anything to the story.
This is a game adaptation, but the story did not convince me to try the game at all.
Note: the summary listed in MAL is very misleading.
Art:
It's nothing special. No depth of any kind, and very generic looking characters. The background is even worse. I know this is a game adaption (never played the game), and this art did not convince me to try out this game.
Sound:
same as the art. Very generic, and the same sound is used over and over again. There a scenes where you feel somewhat hyped, but the art/story and event just lets you down everyime.
Character:
I can't even tell who is important in this series. Random "character development" (ie looking into past) in some episode. Honestly, there wasn't any character that I felt attached to in the slightest
Enjoyment:
Took me 2 hours to watch each episode because I fell asleep. Sums up the entire series. There has been alot of series where it wasn't really good, but there were 1 or 2 scenes where it was cool. I wan't able to find any in this series.
Overall:
Don't bother watching this. At first, I thought that there were some inside stories I am missing, or this series may have been for the fans of the game. A good example is Bang Dreams. However, after watching 12 episodes, I genuinely think it was just bad. If there is anyone who is a fan of this game and think differently, please let me know. It is possible I just missed the entire series.