sure, keep denial the fact that during Zoro flashback Kazaburo teach him to use sunacchi to gain strength and courage and to kill someone. Zoro will get a blacken blade not vs King but Kaido. It coming whatever you like it or not
So with King, did Oda actually show us, how ZKK will happen. Maybe kaido can separate his main body to his dragon form. Luffy beat Kaido but in the end the dragon form flies to the fllower capital and then Zoro cut the dragon resulting kaido death in onigashima where his main body remain.