Mythchan. What I really enjoy about this is the lack of fear or pain in the character's expression. In my experience, some masochists do express fear and pain while in the scene, but some -my boy included- get blissful smiles or wicked expressions, depending on the night and the mood and the scene. I may just be seeing things, but I think I see a bit of a smile here, perhaps a hint that things should be taken further.
I'm in love with the coloring style. :S I haven't felt very creative lately, so going through all this art that I adore just makes me envious.