There was the possibility of death. Yogiri couldn’t tell what his opponents were thinking, but when they decided to kill him and those thoughts translated to actions, the probability of him dying increased. He could detect that probability as a fine black mist or black lines. But the line of death coming from the man passed clearly by him, not even grazing Yogiri. In short, the guy would miss. He clearly intended to kill Yogiri, so Yogiri would have no problem killing him anyway, but he hesitated to do so. That would give Vivian exactly what she wanted.

-Volume 7 page 33