HimeYoku: A Sacrifice of Lust and Grace

Driven by the need for revenge, a young man named Caldo storms the Kingdom of Solide entirely alone — a kingdom whose ruling dynasty has grown wealthy and powerful on the profits of war. Through a series of unholy pacts with forces no one can see, he seizes the castle. Then, strangely, he seems to lose interest in Solide's politics and its people — and turns his demonic arts toward the lovely Princess Fiana instead.