Adam had long since activated his Sphere of Resonance. Hence, the moment this person came within range, he instantly noticed!
When the dagger was mere inches away from stabbing him, Adam calmly leaned to the side and evaded the attack with great ease. In his vision, the dagger was going right past him in slow motion.
Adam grabbed the person's wrist with his right hand, then delivered an uppercut to the person's elbow region with his left, instantly snapping the man's arm in half.
"Ugh!" The assassin was stunned by the sudden turn of events, and before he knew it, his arm had been snapped in two. He grunted in pain as he saw his forearm bone jutting out of his flesh.
Only now did it dawn on him. This kid was pretending all this while!
Adam grabbed the man's broken bone and yanked it out of his arm. Then, he stabbed the sharp piece of bone into the person's shoulder, pinning him to the ground.