This move simply entails A squeezing the target's face with his hand. He uses this technique when punishing Killer B.[1][2][3]
Trivia
- In wrestling, there is an actual move that resembles this one called the "claw hold".
- In Naruto Shippūden: Ultimate Ninja Storm Generations, A uses this as an actual technique, infusing his hand with lightning-natured chakra and then slamming his opponent's head into the ground to cause more devastating effects.