I mean the same slash that cut the boro breath is the same one that Cut Kaido.
Kaido can only be cut with Ryou.
Meaning the slash that cut the Boro breath is Ryou.
Is everything Swordsmen do in One piece just Advanced Armament? Yes. Yes it is.
Get ready for T-bone's air slashes that change direction mid-air and Zoro's Ashura to be Advanced Armament haki.
I'm not joking, T-bone basically has limited telekinetic ability on his Air slashes and just wait for that to be ANOTHER advanced armament technique.
Kaido can only be cut with Ryou.
Meaning the slash that cut the Boro breath is Ryou.
Is everything Swordsmen do in One piece just Advanced Armament? Yes. Yes it is.
Get ready for T-bone's air slashes that change direction mid-air and Zoro's Ashura to be Advanced Armament haki.
I'm not joking, T-bone basically has limited telekinetic ability on his Air slashes and just wait for that to be ANOTHER advanced armament technique.