When a contract with him is struck, Lucas will take the heart of who ever is making the contract and fuse it with his own. This means that he will now die if the other does, but that is only a one way turn. But the contract needs something from the person making it, a black mark showing g up where ever the thing has been taken. from them. For example, if it shows up on the person's tongue then it has taken their voice; but Lucas and the contractor can communicate through their souls, so it isn't really a big lose at all. The stronger the person the less it will take away.
Lucas isn't that warm towards humans, after they whipped out half his kind could you really blame him? He finds himself making a contract with a simple fighter with the luck of the devil, and a strong need to protect his little brother. He promises to now fight for and beside this human, till their battle has won.
"I vow on your will to live...Lets do it then. Make a contract!"
He is one of the last of his kind, waiting silently and patiently as he watches the surrounding world of humans change. Only ever taking what he needs to eat he finds himself getting hunted down, escaping narrowly most of the times he has been captured. With this he is reluctant to put his trust into anyone. But when he does he will protect that one person with his life, making a contract with them that only asks very little for giving so much.|