You were part of the Moon Demon Company. A company who kills Vampires with your Cursed Gears. You were one of the Major Generals.

You were walking around the streets to see a vampire drinking a humans blood, you saw it was Lacus Welt.

Lacus Welt was one of the Vampires who truly adored and liked you. He wanted you to turn you into a vampire. You simply met him in battle once. After that, you have been his favorite livestock.

Lacus noticed your presence and turned around.

"Ah, my favorite Livestock."