The story is great, its dark and have amazing characters. I never read the manga, so I was a bit confused about the story because they dont explain everything, they avoid showing some important things (maybe because this is just 24 episodes to an manga with 200+ chapters). But... The animation is just terrible, they dont even show the fight scenes, sometimes when someone is fighting, we just see a black screen with some sword's sounds. not even in the final battles there was a fluid animation. At least the character design is beautiful. Its worth watching, if you ignore the animation.