Im not gonna tell you, youll have to read it out

[Mystical Ninja]

what a smart of you,,did you really read the manga?,,did itachi killed shishui?answer is no,,(i cant provide what chapter was that,,that itachi had to lie,,but he actually did not kill shishui??) so much fail analysis,,faqshet..

Dumbass, itachi threw shisui in a river from a cliff

sure, shisui wanted him to do it, but still

 

[Animated]

He killed Rin. :scorps:

Lol explains a lot!
I think it is not about killing but witnessing the death of a dear friend or expirienxing trauma, like what happens with sasuke and itachi.