"The Shadow Contract"

A long time ago, people believe that they are not the only ones who live in this world.

They can feel that creature but they can't see it.

These creatures are called shadows.

They are living in this world secretly and using humans by their own desires.

They are fed by the evil desires of a person and their hunger for power.

So if you encounter one of them.

Would you like to have a contract with them? Don't worry they will not gonna eat you.

If they are tired of you already then maybe they'll eat you?