Seraph of the End: Owari no Seraph

[KrayZ33]

5: The plan wasn't even discussed either, "You have a plan?" "Do it".
He didn't say anything like "I am now going to taunt the vampire into our formation with this taunt of mine, watch out mr. vampire, you'll not be able to resist my super-taunts!" And even if he did, the result would've been the same, his life as a noble without a 2nd arm is probably not possible anyway.

Before that, all they did was along the lines of "don't lose formation, stay sharp, remember your objective, it's not going to be easy". That's called communication imho.

4:
I'm not saying it sucks, you say it sucks. I'm fine with them announcing it, because it didn't matter plotwise and was purely for cinematic effects. Thats not the reason why the vampire was able to deflect their attacks. Whether you scream from swinging your huge sword or say something instead of grunting - what's the difference? The vampire knew it all along, he dodged 2-sword's sneak attack too after all.
He even said so himself...or rather implied it when he told them that Yuu was his target from the beginning.

As mentioned, absolutely not a big deal, because the flow of the fight was never interrupted, plot and screen/narrative duration was clearly distinguishable too.