Well alot of art programs, such as photoshop, dont have the pixely line things.

@Firebert Well it's a digital painting software,much more powerful than MS paint and can also create pixel arts

I've got no idea what Sai is but the lines are pixely

@Firebert Thx for the comment! I drew this image in Sai and edited with Pixlr.

Is it possible? Somthing decent that was made in MS paint?