'Vampires'.
For centuries, humanity have spent their lives blissfully unaware of their existence.

But as time went on, their presence have been documented, and eventually acknowledged.
Conflict waged, both in the open and in private.

Until roughly 200 years ago, the two factions entered a peace treaty, and have worked to create a harmonious society since.

But peace is fickle, always on a razor's edge.
Uneasy tension, and bad blood remains to this day.

In order to move forward with the spirit of cooperation, some organizations created initiatives to pair humans and vampires to combat mutual threats.

But even that could not fully prepare them for this day...