Simple Modified G-Pen for Easy Tapered Anime Hair
Use both the G pen and the eraser, along with the “G pen – sharp tapered ending,” to draw anime hair easily.

Setting a shortcut key for “G pen – sharp tapered ending” is recommended so you can switch between each tool easily.
You can change how long you want the line to be taper by changing the ending value in the tool property panel. This setting is in the "Correction" tab.
