XEROBOYS

I’ll try:)

Because of Japan Penal Code:

http://en.wikipedia.org/wiki/Pornography_in_Japan

Best way is to show some examples.
I’m using simple ball pen like this one

http://img.misco.eu/resources/images/products/100/BIC/85/850732//850732_1600x1600.jpg

to draw stuff this way:

http://36.media.tumblr.com/5552cfa521a549fc8904e960c3d02755/tumblr_mu7bptyGNT1rwff3lo1_1280.jpg

I just like that i can do some shading with it, it is not binary black/white.

I found copic multiliners SP best whenever i want to have clear and precise black lines:

http://www.kadmium.com.au/media/catalog/category/copicmultiliner1.jpg

Drawing done with multiliner:

http://41.media.tumblr.com/4674ab7b12164e3493dc79bae47954ec/tumblr_mph611tPlT1rwff3lo1_1280.jpg

I’m using all of them with copic markers:

http://cdn.dickblick.com/items/213/95/21395-group3ww-l.jpg

Drawing done with markers only:

http://40.media.tumblr.com/57bb31ccfd002fdb3c4340e5575f648e/tumblr_miwhd2qizK1rwff3lo1_1280.jpg

multiliners behaves well but only on copic paper:

http://41.media.tumblr.com/e9967379d621f2764e1bae6849b9efbd/tumblr_mo5droVaoa1rwff3lo1_1280.jpg

There is some bleeding, but it is good enough.
I couldn’t find any good replacement for copic paper.

Any other pens bleeds even with copic paper but i tend to take it as a feature, not a bug and i try to do simple shading with it using only pen and copic blender. Here is some result:

http://40.media.tumblr.com/f8a2e690ee709f14fec7ac8401025baa/tumblr_mph5gjmyp51rwff3lo1_1280.jpg

Simple blue ball pen with copic blender:

http://41.media.tumblr.com/a97a27adfa437abbc2d716ab052646e4/tumblr_mrmnnir8vg1rwff3lo1_1280.jpg

Sometimes it works, but sometimes it is total fail:

http://41.media.tumblr.com/1df986d573897e5607ef866758d04a1f/tumblr_mph5s4DMZ31rwff3lo1_1280.jpg

And here you have ball pen and markers and multiliner, all in one drawing:

http://40.media.tumblr.com/ead8bc76cccea48621bbc95fa9388ae1/tumblr_mubhlobSdP1rwff3lo1_1280.jpg

I hope this is helpful, happy New year!:)