>>2963626This board is full of retards who don't draw.
Anyway, your thread prompted me to try to find an answer, here's what I found.
Open manga studio.
Make a copy of the G-pen
Next to the little bar that changes brush size, you have a button, click on it.
A window with some settings and two graphs will pop up.
The settings are: Pressure, Tilt, Velocity, and Randomness.
Randomness is the one you mostly wanna mess with, it's what gives strokes that less than perfect stroke. I set mine to 50.
Also, activate Velocity, and tweak it, this makes it so that lines get thinner in the middle during fast strokes, like a real pen would.
Tilt is useless if your tablet doesn't have tilt detection.
I also messed around with pressure to make it feel more real, how you do this is up to you. I set mine to 34, with the curve being skewed downward so you get less output unless you really push down, but that's just a preference based on how I draw lines.
In short, while I can't tell you Yoshikadu's EXACT settings, I can tell he's using that feature of MS to customize the basic tools. It's the little button next to the size bar. It's got 3 dots arranged in a triangle.