Hamartia

A Hamartia is a hole within the soul, a missed opportinity, a failure, a tragic weakness that scarrs the soul and make the mortal suspendible for creatures from beyond to creep within. It represent the main reason a person has not an happy life and is (or was) unable to achieve her dreams.

The term is usually used among the Amenti, whose tem-akh search for such mortals they can repair. However, the Fallen search for similar scarred mortals to possess. While during the creation of an immortal the original soul is not harmed, the possession from a Demon results in being consumed utterly and being replaced by a fallen angel.