Payback (4)
When Frank was about to attack, Luke suddenly attacked the enemy's fist with his left. The blades of the claws pierced his hands and made Frank flinch. In the next moment, Luke punched the enemy's stomach, opening a large wound there and pushing Frank backward dozens of meters. The pain and the surprise stopped him for a moment, but soon he recovered when he saw that Luke didn't end there. Luke suddenly charged after using Stinger, and then he used Mana Manipulation to reinforce Sonic Blade. The blast of energy covered Frank's whole vision, and he didn't have time to dodge it. He only moved his arms to block it.
Although he protected his head and vitals, Frank was pushed backward even more, and he collided against a tall barricade made of destroyed vehicles. Luke got quite surprised that the power of his skill increased that much, and it seemed that manipulating his mana like that to reinforce them wasn't the only benefit.