Very nice passionate moment. Like the others I like that the woman is really drawing blood out of the guy's shoulder there. The composition is great and I like that you can see the details of their face expressions and their muscles, hair, highlights etc... I love it.
I love your art work. You're so good at. And I don't know but I fell in love with Kuraihoshi way back when you did the "Listen to master" piece. And I would so love to read a story of him.
But back onto the artwork. I love the intimacy between the characters. And I don't see anything wrong with a female demon wanting to claw up her demon mate. Especially if he does something that worth being clawed for.