The name being said reminded him of his failure. He nodded his head somberly.

"Yes... Zero-san was the ayakashi. He was a shinki, and so he..." Somehow, some way. Had he said too much? No, he know he didn't. He had said too little and it had left the other man desperate for answers. He didn't know what had happened afterward. Something, something to set him off. Had he run out of those blood pills? Did he... somehow lose control? He supposed that was the only reason.

"...I suppose there was nothing I could do."