Hot take, Kakukai > Ryofui as a politician
I doubt Ryofui could’ve defeated Zhao from the inside like this, Kakukai Sama is truly a top 5 political mind in the manga
Kakukai has less competition than Ryofui had and took les responsibilities
Riboku never actively tried to rival him and put him down. Ryo Fui fought for the throne for himself, built a powerful faction, made alliances, betrayed, and more importantly led the state of Qin for years by himself
Kakukai is a master bastard but Ryo Fui and him aren’t playing the same game. Kakukai is great but he is not his own man.
Ryo Fui smokes him