Originally Posted by uchihademon91
just a thought.......maybe you dont even have to see your closest friend getting killed to obtain MS.
since, to obtain MS, it requires an immense emotional trauma that can be brought on by the death of your closest friend. what if, just by finding out that shisui was killed, itachi gained his MS. when the uchiha nin told itachi of shisui's death he was a little shocked. his eyes widened a little, which expresses shock. but being apart of anbu he is able to suppress emotion very well.
so if thats true then itachi could have gained his MS then and there, meaning he didnt kill shisui.
a little theory to go with this hypothesis......................danzo noticed shisui trailing itachi, so he killed him to get him outta the way. without itachi knowing of this.
questions still arise tho
that does kind of makes sense even though itachi didn't get his MS killing shisui he might have thought it would've made sasuke stronger if he did and his whole purpose was to make his brother stronger
but questions do arise as maybe if you kill your closest friend yourself will you still have the trauma? sasuke wasn't very traumatized when he fought naruto at the valley