Brunhild the Dragonslayer, Vol. 1 — Yuiko Agarizaki

Eden… A place of perfection… A place where man and beast live side by side in harmony… Eden's protector, the silver dragon, regularly visits retribution upon those who would bring harm to paradise. But when the dragon discovers a human girl on the shores of Eden, he decides to raise her as his own. He teaches her that if she is to be welcomed into God's Kingdom after death, she must not harbor hatred in her heart. But when the dragon's life is mercilessly snuffed out by human machinations, the girl must choose whether to heed the dragon's dying wish and stay the course of righteousness…or walk a path of vengeance.