Shinju no Nectar

Shinju no Nectar Sakra, the sole remaining princess of a destroyed kingdom, is relentlessly pursued for the power of Ambrosia she holds—a divine force that can bestow immense strength, but only upon a human. Without a human ally to rely on, she resorts to summoning one from another world in a last-ditch effort to find a protector. However, the man who answers her desperate call falls far short of her expectations.