Brunhild the Dragonslayer, Vol. 1 (manga)

Blessed by the divine, Eden is an idyllic island protected from outside harm by its guardian, the silver dragon. One fateful day, the dragon finds a small girl on the island's shores. Teaching her love and compassion over hatred, he raises her as his own. But their time together can't remain peaceful forever-Eden, rich in resources, is a prime target for humanity's advancing military might. In the face of violence and hostility, will the girl heed the dragon's words? And can they defend their coveted paradise?