"It wants to attack you," Sephiroth says. He's preparing to pull Leo away from it, if needed.

"If it does bite you, the infection could spread to others as well," he points out. "So unfortunately, in that respect it is my business. We don't need a pandemic."

He doesn't want Leo personally to be hurt either, but he doubts he would be believed on that, so he's trying to appeal to logic. If Leo will respond to that.