I love the lighting and shading along with the earth tones in this picture. The posing you chose to go with is playful yet romantic. But what I partially like in this picture is how the Sorrow is showing more skin then the Boss. It's a refreshing change from the cliché posing were the women skimpily dressed.
This is a beautiful picture. I really enjoy the lighting, along with the natural fluidly of the pose. But what I am particularly fond of in this picture is the emotion you brought to life. Even if the viewer is not a fan of Metal Gear Solid, or has no knowledge about story behind these characters. It is very easy to tell that these two characters are madly in love. Great job capturing that.