Lmao he was cutting them and freezing through the cut, similar to Brook's technique. what is so difficult to understand?
1- You keep saying he "cut them", but the chapter makes it a point Nasujuro left no cut. So how do you know he cut them?
You still haven't answered, because it will mean Shanks is a swordsman.
2- So how do you know Brook's technique was also a sword technique?
You won't answer this, because it will mean Shanks is a swordsman.
3- Shanks only technique so far in the series cut a railgun perfectly in two halves.
Which means he has cut more things than Nasujuro so far.
"Nasujuro just used ice powers through his sword, that was not a sword technique and he's not a swordsman". That sounds dumb, doesn't it?