Bloody Business

 is a Minor Quest in Outward.

Walkthrough
Begins at Blood Mage Hideout in south-western Antique Plateau. Interact with the corpse sitting on a throne at the end of the small dungeon.

To complete this quest, simply find 4 Activated Blood Sigils around exterior Antique Plateau and defeat all the Blood enemies there.
 * "Stone Gazebo" is at the Duvernay Plaza marker (north-west), there is a Beastmaster and 2 Bloody Beasts
 * "Windmill on a Cliff" is at the north-east Isolated Windmill, there are 3 Blood Mages
 * "Crumbling Temple" is at the Cabal of Winds Temple marker, 1 Blood Mage, Blood Warrior, and Bloody Beast
 * "Fortress Barracks" is south-east of the Wolfgang Mercenary camp (it's quite a walk from the camp), 2 beasts and 1 mage

Once all of the enemies are defeated, simply return to the chair in the Blood Mage Hideout and interact with it to receive your rewards.

Outcomes

 * Curse Hex
 * Possessed (skill) (if you do not already know it)
 * Enchantment recipe for Thirst