There aren't enough dialogues for the servants. Majority didn't say a word at all. It's just not up to the expectations sadly. The fighting animations are quite good though, just feels weird that majority of them didn't have any voice lines. Honestly, I think maybe this singularity is just not suitable to be animated. Overall, I cannot say it's worth watching but it's okay to watch if you have the time. Just don't expect much, there isn't much to expect.