Vampire and the Knight

In a world that the Human Race and the Demon Race fight against eachother, the Human Race has a new special job – The Holy Knight who guard the first defensive line of the Human Race. But among the great Knights, he is the sole religion, the great example of all the Holy Knights. Unfortunately, during a war, he was defeated and kidnapped as a prisoner of the Empress of the Vampire Clan. And another story is unveiled.