Even though the Sudden Flash was already pretty fast, but Kazuki knew that he could cast the skill even quicker. He was merely using the Sudden Flash on Isshin Yagyu's memories just now.
However, it was apparent that Isshin Yagyu had not reached the Kenshin Tsumei State and was a Swordsman at best. Kazuki had reached Kenshin Tsumei, and in his previous life, no matter the cultivation, as long as the Kenshin Tsumei State was attained, one would be titled a Sword Fairy.
A Sword Fairy was able to use anything as a sword. Those with mastery in it were able to utilize their body as a sword where every single part of their body could be used to kill. On the other hand, those with full mastery were able to kill soundlessly by forming blades from the focus of their gaze alone.
Anything could turn into a sharp sword in his hand, and all the sword techniques that he used could be significantly improved overall.
