"Do you have no other demands?" Zariel asked.
Amberser replied, "Of course I do. Pseudo-Souls are my proprietary technology, and you may not investigate these Demonic corpses in any way, or leave any special markings. I don't want my techniques to leak. By the Nine Layers of Hell, you must sign a contract that cannot be violated. Don't think about exploiting any loopholes. Any markings left on them will be considered a breach of the contract, even if those markings were left by Demons!"
Zariel and Mammon glanced at each other. If that was the condition, they could accept it.
Demons indeed leave many things on corpses, such as curses and spatial coordinates, which can be troublesome to deal with in advance, but the cost isn't high.
