I recommend the Clio Sharp So Simple Waterproof Pen Liner.

I'm using the Clio waterproof pen liner!

Black looked too intense.

I would have liked a grayish-brown color, but this color isn't bad either.

And first of all, it was easy to draw.

I actually think pencil liners are difficult to draw with.

I recommend this if you are looking for a pen liner that isn't too intense!