The characters in Naruto don’t have abs, right? Why does our MC have abs? 🤔

I am trying to understand why the power of the MC can create a field around them if the MC's power is the ability to change vectors or the magnitude and direction of force. When [Accelerator] is attacked by bullets, he multiplies the direction of the bullet's force by cos(Pi) or cos(180) or -1, causing the direction to reverse. There's an enemy who, when attacking [Accelerator], pulls his hand back, but when [Accelerator] uses his power, it causes the enemy's hand that is pulling back to be reversed and thrust into [Accelerator]. In summary, [Accelerator] never had a power field around him from the beginning. I believe that MC thinks they have a power field around them because his mind is deceived. He believes that his power field can move to his arm and thicken because he concentrates his attention on that area, allowing him to observe that area better and use more power in that area. As for the part where he punches through a crumbling wall may be because he increased the size of his hammer without realizing it. His hand isn't injured because he reflects the force that harms his hand.