Board Thread:Theories and Speculation/@comment-29769110-20170115161829/@comment-734582-20170116085627

Lorenzo.r.1st wrote: maybe he used it on sasuke to make him hate itachi even more, become a creep, and destroy the village... ok.. only the last two are true. It's possible. Alternatively, he used it on Danzo to ensure his deal would work.

Besides, the power is easily detected (see: gokage summit) so you can't go super-wild with it.

QuakingStar wrote: The 10 year Cool down only exists for people other than Shisui himself. Yea i thought that was pretty clear. Danzo could reduce it because of Hashirama's cells.