[He's starting to wonder if they're just going to wind up finding themselves surrounded by random adults, at this rate. Is this woman a hunter, too? It might make sense, considering how she seems to be so familiar with the man. It's actually kind of comforting, to think that they're both hunters. But... also kind of strange. In spite of the way Mika's acting right now, he can't help but notice that the woman is really... comforting.
Zero and Yuuki... maybe... they're not bad people? Or maybe Yuuichiro is just that desperate for there to be people he could trust in this place, aside from Mika. He's giving a contemplative look around the time his friend starts talking again. His eyes outright widen at three particular words: I'm a vampire.
Just like that, he seems to momentarily go into shock. Both hands tighten into fists to the point where they're trembling, and it's almost as though his body has become so rigid, even his lungs refuse to move. When he finally figures out how to breath again, there's a loud whoosh of air escaping him.
His throat suddenly feels dry, but he manages to work past that for the sake of speaking.] M-... Mika, why are you... saying things like that? You can't-... but you're not-...
[But even as he's stumbling through those words, it dawns on him that... it only makes sense, considering the extent of the injuries that bastard inflicted on Mika. His teeth clench together and he takes a step back, away from the blond. It's not an act of him trying to move away, but the sudden relaxing of his body nearly caused him to fall. There's the sound of laughter.
It's the kind of laughter that's given in place of crying, however. The kind that's only released from a person when they've realized the bitter irony of a situation. The kind of self-loathing, self-blaming laughter of a twelve-year-old boy who realizes that he... really had let his entire family die -- one of them simply died in a way that curses him to live the same fate as the one who slaughtered the Hyakuya children...
His voice is small as he gives the blond a deeply apologetic look:] I'm... sorry... It's all my fault. If I had just-...
[He's crying again, though the tears are barely started when he seems to remember that there are two other people -- two... hunters? He's not going to bother trying to figure it out, however, before he's spinning around and glaring at them. A fierce kind of glare filled with determination and a need to protect the blond.] I don't care... what he is. Mika's nothing like them! If you try laying so much as a finger on him--
[His arms are outstretched as though that could possibly make a difference.] --I'll kill you.