Don't put down this manga for the image, because thoose ones are claws of a dragon, and the story is a sweet shonen ai. Don't worry, it would warm your heart at least.
We have one human, comander and brother of the king, who would do anything to protect his country... even give himself to the dragon god that protects them.
In the other side we have the dragon, a lonely creature who doesn't understand the difference between species. Just want to have someone at his side, to have a family.
The story have a lot of povs about amorality, violence and how can we understand the others without been to harsh with them.
Because the dragon doesn't know how to live with humans, and the humans doesn't know how to trust and forgive the dragon.