Maiden rose 2005 [OVA]

Two soldiers from warring countries are bound by a pledge as master and servant. Taki Reizen is a commander of sublime beauty, shouldering the fate of his nation. Called “Mad Dog” because of his rough temperament, Klaus has sworn his loyalty to him as a knight. Despite this, those around them are cold and disapproving, full of various misgivings. For all their genuine feelings, what will come of love made cruel by the violence of war?