I actually don't know Vampire Knight that well, so I read some different stuff online and put these two together. I'm not sure if they are a couple. I thought Yuuki was around another guy besides Zero. I actually ran out of anime couples that should've been. I'm saving my best couple for tomorrow or the couple I thought "should've been." So here is a couple from a popular anime Vampire Knight. Zero & Yuuki. (Is there a couple you thought "should've been" besides Zero and Yuuki?)