Assassination had two critically important requirements: silence and invisibility.
Never underestimate these two prerequisites of assassination. If one could not achieve silence and invisibility during an assassination, then it could not be called an assassination at all—it should be called an open killing instead. Moreover, true silence and invisibility were not so easily attained.
To fulfill these two prerequisites of assassination, one undoubtedly had to undergo a great deal of arduous training.
The reason Uchiha Yue could achieve perfect silence and invisibility was also because he had spent some time in assassination back then.
As an Anbu, if one could not even meet the two prerequisites of silence and invisibility, then that Anbu could only be considered unqualified!
First, what exactly was perfect silence in an assassination?
True silent assassination did not mean making no sound at the instant one attacked. After all, there were simply too many ninjas in the Shinobi World capable of striking without a sound. For example, when throwing a Kunai to assassinate an enemy, most ninjas could keep the Kunai from making any noise.
However, true silent assassination did not simply mean making no sound when attacking.
True silent assassination meant making not the slightest sound throughout the entire assassination process. Such silent assassination was undoubtedly extremely difficult, because even if an assassin could control their own movements, they had no way to control the movements of the target. If the target let out a muffled groan or a wail at the moment of death, then the silence of the assassination would have failed.
Therefore, a perfect silent assassination should produce no sound whatsoever from beginning to end.
Just like Uchiha Yue now: as he assassinated those Kirigakure ninjas, even the sound of his own movements could not be detected.
This was true assassination. This