Fleur-de-lis: Bound by Fate

300 hundred years ago, the Vampire God began his massive genocide against humanity and other races, forcing them to establish the hidden city far away from the vampires' reach. The races hidden in the city prepares to train their soldiers to retaliate their oppressors while developing weapons to eliminate the vampires, as well as a magical technology to hide from their enemy's view, enjoying their free but fragile peace for 300 years. Now, as their hidden city is now on the verge of discovery and its possible destruction, a group of cadets will embarked on a journey to stop the Vampire God and restore humanity's freedom; as well as uncovering the secrets of the man with the mark of the lilies, which the Vampire God was sought after for 300 years for unknown reasons.