The infamous Divine (Akatsuki no Yona fanfic)

Jae-ha finds himself captured by some group of newbie Pirates. He attempted to escape, using his right leg but he soon realize that he appeared to be a normal human. Not until he was saved by the mysterious warrior, Angelica and her doll. She explained that there was some sort of Black magic going on that prevented the dragon warrior from using his leg. Both join forces to figure out who's behind the whole plan of sarcificing people to the Gods and to get Jae-ha back to his friends. But the more deeper they get into their quest, the more they find out that the four dragon warriors weren't the only dragons around.