This is Abel, from my Yaoi comic Depths Of My Empty Soul.
He's struggling to keep control of himself after he's been "tainted" by a demon. I'd explain more but I'd be spoiling the story a bit for my readers =w=

Sketched on paper, inked with SAI, and colored with Photoshop7

Hmmmmm, this might make a good cover for a future chapter~ =w=