Sword Storm

Even in his wildest imagination, David hadn't expected to have met someone whose speed was so fast this early into the ruin.

According to his calculations, she had broken past mach three without any preparations, she blasted forwards with Mach five and her speed didn't seem to decrease, moving with increasing velocity, appearing before him with her sword slashing at his neck.

David could feel a sharp prickle cutting through his skin as a sharp sword appeared just a few inches away from his neck.

Truthfully, this was the first time David had seen a human moving with such speed even faster than the blink of an eye. 

Even the speed of the two old geezers at the academies could not be compared to the speed of this monstrous lady before him. 

Perhaps, the reason could be because she was a Legacy successor, but even then David had also faced a Legacy successor before, but she wasn't as strong as the lady before him