Vampire Government and World Building:

1. The Vampire Hierarchy: The vampire government is structured around a strict hierarchy, with powerful vampire overlords ruling over different territories. Each territory is governed by a dominant vampire lord or lady who maintains control through a combination of fear, manipulation, and ruthless enforcement of their laws.
2. Blood Tribute: To sustain their immortality and power, vampires demand regular blood tributes from the human population. These tributes are collected by vampire enforcers known as Blood Collectors, who roam the territories and ensure compliance. Failure to provide the required blood tribute results in severe punishment or even death.
3. Witches' Alliance: The vampires have formed a dark alliance with witches, who possess their own magical abilities. The witches serve as advisors and enforcers for the vampire overlords, using their powers to manipulate and control both humans and supernatural beings alike. They are tasked with maintaining the dominance of the vampire regime.
4. Human Slavery: Humans who are captured or deemed unfit for blood tributes are often enslaved, forced to serve vampires and witches in various capacities. They are subjected to harsh conditions and treated as disposable property, used for labor, entertainment, or as a constant food source.
5. Vampire Transformation: Vampires can only turn humans who have demon blood in their lineage, as vampires were originally created by demons. Half-demons can be turned by being fed vampire blood. Vampires kill full-blooded humans and turn half-demons to bolster their ranks. However, vampires maintain full control over their bloodlust, ensuring they only feed when necessary.
6. Vulnerabilities: While vampires are immensely strong and possess supernatural abilities, they are not invincible. Extreme blood loss, decapitation, or being shot through the heart are some of the ways to kill a vampire. Sunlight weakens them but does not instantly kill them. However, prolonged exposure can lead to severe deterioration and eventual death.

Additional Lore Ideas:

1. The Enigmatic Order of Shadows: A secretive organisation of assassins and spies who operate in the shadows, their allegiance and motives are shrouded in mystery. They are skilled in dark magic and manipulation, serving as key players in the power struggles between supernatural factions.
2. The Lost City of Eldoria: Rumoured to be a mythical city hidden deep within an enchanted forest, Eldoria is said to hold ancient knowledge and artifacts of immense power. Many adventurers and treasure hunters seek its location, hoping to unlock its secrets or harness its magic for their own purposes.
3. The Veil: A mystical barrier that separates the human world from the realm of the supernatural. The Veil is maintained by a select group of powerful beings, ensuring that humans remain unaware of the existence of vampires, witches, and other creatures that inhabit the shadows.
4. The Prophecy of the Blood Moon: An ancient prophecy foretells the coming of a Blood Moon, a celestial event that is said to possess the power to tip the balance of power among the supernatural factions. The prophecy fuels intrigue and conflict as each faction seeks to control the outcome and harness the unique energies of the Blood Moon.

Additional Character Ideas:

1. Severin Blackthorn: A brooding and enigmatic vampire lord who possesses an insatiable thirst for power. Severin is ruthless and cunning, manipulating others to further his own agenda. His past is cloaked in shadows, and he is known to have intricate ties to both the vampire overlords and the Order of Shadows.
2. Seraphina Nightshade: A charismatic and powerful witch who leads a coven dedicated to preserving ancient magical knowledge. Seraphina is renowned for her mastery of elemental magic and her unwavering commitment to the balance between supernatural factions. She becomes a crucial ally to Laurel and the human rebellion.
3. Magnus Stormbringer: A fierce and noble orc warrior who leads a faction of orc fighters in their resistance against the vampire-controlled territories. Magnus is known for his exceptional combat skills and his strategic brilliance. Despite his initial disdain for humans, he forms an unlikely alliance with Laurel, recognising the common threat they face.
4. Cassandra Moonshadow: A seer and wise elder within the witch covens, Cassandra possesses prophetic abilities that guide the actions of her coven. She is revered for her wisdom and connection to the spiritual realm. Cassandra becomes a mentor to Laurel, aiding her in her quest for truth and offering guidance in the face of adversity.
5. Valeria Blackthorn: Severin's half-vampire progeny and a conflicted soul torn between her loyalty to her sire and her longing for a more humane existence. Valeria possesses unique abilities inherited from her demon bloodline, making her a valuable asset in the power struggles between vampires and other factions. Her internal struggle and quest for identity add depth to her character.