Capítulo 688: 12.90 Unknown Star - Modern ABO World: Second Case - Agent Y and Agent A

Nightshade or Abigail Crowell exchange moves with Hei Yuhua. They shoot at each other and dodge simultaneously. Their weapon handling was fully professional but Hei Yuhua's accuracy is above hers. In that short exchange of bullets, Hei Yuhua was unharmed while Abigail Crowell got her left arm shot. 

Hei Yuhua's expression remained cold if not for the slight scratch on his right cheek which was grazed by the bullet when he saved Mama Hei, he would totally been unharmed. That's how much difference the strength Hei Yuhua has with Agent Abigail Crowell who is also an agent.

Agent Abigail (Nightshade) pressed on her wound as she looked at Hei Yuhua helplessly.