TBH, the "small fry" shadow knight design looked cooler to me...
Man. It pains me to see Yuki fight and bleed for these nasties who'd betray her in a heartbeat if only she wasn't stronger than them. Worst of all, she still doesn't know about their betrayal of the boy who she's losing sleep over. So annoying.
The creatively named "Black Knight" should just focus on his little game and slay the others first, but now I'm feeling even more sure they'll all live because plot armor: the story needs them to live so the MC can see his revenge happen.