Great concept, lots of different and interesting ideas, and detailed art. But with so little amount of story it remains a collection of concepts and ideas.
In a “WWII like” war, a soldier is able to awaken and use a cursed (and thought of as extinct by many) dragon, whom he rides in order to fight the enemy. When not being ridden the dragon can transform into a man, which is where the Yaoi tag comes into the story.
Close Your Eyes (inariya Fusanosuke)