Ryuugoroshi no Brunhild

Eden, an island blessed by God.

An unsullied girl wanders into this island rich in natural beauty. She is bathed in the blood of the dragon that protects the island, and she is allowed to stay in Eden and live with the dragon. Thirteen years later, however, her peaceful life is shattered by an expedition of the imperial army, led by Sigibert, "The Dragon Slayer."

(Source: ComicWalker, translated)