Did Danzo use Shuisui's eye to become Hokage? In Naruto Shippuden, Danzo has a sharingan with powers that allows him to control the mind of his victims as it is shown in the 5 Kage Submit. In the 197th episode, after Pain's attack, some of the heads of the Land of Fire meet to decide what to do next and who should be the next Hokage. Kakashi should have been chosen but Danzo made the Daimyo to change his mind.

Did Danzo use his sharingan's powers to become Hokage or was his speech good enough to convince the Daimyo?
Danzō, rather than using the sharingan's ability, used the Daimyō's indecisive characteristic to his advantage - knowing he would side with whoever convinced him the most.


  The Fire Daimyō has a fickle and indecisive nature and is easily swayed in his decisions through biases as well as external influences. When situations call for fast, important decisions, he makes his advisers do the whole work: the one who convinces him most is the "winner"


Danzō convinced  the Daimyō that Kakashi, who was initially considered for becoming the 6th Hokage, maintained the same ideology that put Konoha in it's current state of crisis.


  However, Danzō points out that the teachings that were passed down to Kakashi were the cause of Konoha's problems and current crisis. The Konoha Crush, the frequent confrontations with Akatsuki, the defection of Sasuke Uchiha, and the destruction of Konoha's infrastructure, all stemmed from the ideology that kindness and unity would lead to peace. Danzō believed the ideology simply made Konoha appear weak and left them exposed to attacks 


The Daimyō believed and agreed with Danzō


  The daimyō, persuaded by Danzō's words and reasoning, appointed Danzō as the Sixth Hokage Candidate, just in time for the Five Kage Summit.