In the continent of Astoria, the protagonist Karen is a low-level deacon of the church, but in fact he is the last bloodline of the Shadow Relic - he is born with the ability to control the shadows, and can also swallow other magic to strengthen himself. In order to survive and find the "shadow core" of the bereaved family, he pretended to be pious: after each prayer, he would clean the altar and use a small amount of shadow to wrap up the remaining holy light and turn it into power; he would sneak out of the church at night and use "shadow obscuration" to help black marketeers erase their traces in exchange for clues to the ruins, never daring to reveal his strength. Once, the church discovered the relics of the deceased family, and Karen took the initiative to record the remains and went with the high-level paladin and bishop. The Paladin used holy light to blast open the stone door, triggering the protective formation. The holy light arrows defeated the defense, causing heavy casualties to everyone. When Karen was dying, her bloodline awakened, and the shadow automatically formed a barrier, blocking the arrows and converting them into black fire. This scene was caught by the bishop and wanted to get rid of it. Karen no longer hid, pierced the bishop's shield with a shadow spear, swallowed the holy light on the paladin's sword, and killed the church members. After finding the core of shadow deep in the ruins, he learned that light and darkness come from the same origin, that the church has tampered with history, and is collecting "holy light fragments" to destroy the origin of shadow.
Purpose: Karen, as a descendant of the shadow family, uses justice to influence evil and eventually becomes the "Lord of Shadow".