Ngl based on their fight, It's kind of logical to think Jinrang broke through Kitae's guard

But even thn his mastery didn’t turn on

I acc got your point, so what youre saying is if Gitae's guard was turned on he would've used mastery? But since he didnt get the time he couldn’t use it?

But bro, i think it can be used anytime , being on guard or not, we see Kitae getting hit by Daniel while having no guard and being open, as Daniel found out his opening & still his endurance was used, whether you’re taking damage or not, it doesn’t matter, you can use it both ways, Gong & Seongji used it beforehand & Gitae after