I'm on episode 9. How tf is seba surviving all this.

I'm watching the heisuke and shin vs seba fight. And from what I counted, at least 5 bullets hit him, 3 in the chest, one gashes his face, and the other hits his arm or shoulder. And yet no damage. No limps. No nothing, I know this isn't supposed to be a realistic anime, but even Mr Sakamoto dodges bullets. This guy doesn't even flinch. And yet a single kick from shin somehow knocks the fucker yet. Does the invisible suit protect him? Are the bullets non lethal or something? I don't fucking get it