Ackster didn't know where the thought came from. But he realized that maybe he didn't notice the Sword God doing anything other than cutting his arms off because the Sword God wasn't doing anything else.
Of course, it could also be because the Sword God was simply too strong for Ackster to notice anything. But the Sword God had said that Ackster was strong enough to do this. Acksyter was a little doubtful. But if the Sword God's words were true, it meant it was a matter of technical skill, not pure strength.
The more he thought about it and considered the possibility, the more he realized it was possible.
Why would the Sword God waste effort or time with something as unnecessary as drawing a sword, making a cutting motion, and actually doing anything if he wanted to cut someone's arm or head off when he could just cut it without any extra effort?
