In the ancient year of 702, the Creator God disappeared. 'Luciel of Glory,' the angel most beloved by the Creator God, commanded all demons and angels, awaiting the Creator God's return. However, in the ancient year of 811, he was accused of being a fallen angel and retreated from the heavens with the demons. Subsequently, in the ancient year of 812, Luciel established the demon realm 'Marikas' with the demons and settled there. In the ancient year of 814, the heavens and the demon realm began a war, and in the ancient year of 853, a human known as the 'Dark God' enforced a mandatory ceasefire between the heavens and the demon realm.
As the long ceasefire continued, the ancient era ended, and in the modern era, some demons began to interfere in the human world. Angels intervened to stop humans who offered their souls to demons, and humans who could wield angelic power began to appear. Thus, the world became tense once more, on the eve of a storm.
'Starkeeper,' a special angel born once every five hundred years. Starkeepers, who had not appeared since the war between the heavens and the demon realm entered a ceasefire, suddenly reappeared a few years ago. This was after fifteen hundred years. And as the 'Last Angel.' At a time when demons are ignoring the ceasefire agreement and beginning to exert influence on the human world, the appearance of a Starkeeper may not be a mere coincidence. The heavens have finished preparing to protect humans again, and the ominous wind blowing from the demon realm has finished preparing to become a storm.
Pray
[Humans who wield power by receiving the blessings of angels. They appeared to counter the threat of D-xit and consider demons as sworn enemies to be eradicated. They usually receive blessings after reaching adulthood, and being born with them is extremely rare. The power they can wield and the extent of angelic intervention are determined by the rank of the angel who bestowed the blessing.]
• Medea: A rare, high-ranking individual among Prayers. They are powerful beings who can not only perfectly wield angelic power but also directly manifest angels within their own bodies.
• Guardian Angel: A term used by Prayers to refer to 'the angel who bestowed the blessing upon them.'
D-xit
[Humans who have made a contract with a demon by exploiting the darkness in their hearts. Upon contracting, their skin turns black and they gradually become demonic, but the contractor and the demon cannot attack each other.]
• Lower/Intermediate: As they use their power, they lose reason or their bodies transform, and they require 'Pray's blood' to maintain their human form.
• High-ranking (Prometho): Beings whose bodies have been completely usurped by high-ranking demons. They are the most dangerous enemies, maintaining their human form at all times and blending into society without needing 'Pray's blood.'
Glorier & Guardians
Guardians: [An official organization that protects citizens from D-xit and trains Prayers. Its agents serve as humanity's shield, carrying out missions to arrest D-xit and eliminate demons.]
Glorier: [A specialized training institution under the Guardians. All Prayers can apply, and it imparts combat techniques optimized for each individual's guardian angel's divine power.]
• Faculty: All professors at Glorier are composed of 'Medeas,' the highest-ranking Prayers capable of manifesting angels, boasting an overwhelming level of education.
Marikas
[The territory established by Lucifer and the demons who retreated from the heavens, near the Forest of Darkness. It is defined by the vast circular barrier erected around Lucifer, and is more widely known externally as the 'Demon Realm.' It operates with the absolute monarch Lucifer at its apex. Following Lucifer's command, they maintain the territory and the barrier, responding to threats from the heavens and the human world. The 'Marikas Army,' led by six Archdemons who assist Lucifer, defends the domain. Under the command of powerful Archdemons, it possesses thorough vigilance and defense systems.]
Key Figures
[An army of six Archdemons united around the ruler and commander 'Lucifer.' Each army boasts immense power. Currently, there is a severe conflict between the Monarchist faction led by Vice Commander Satan and the Anti-Monarchist faction led by First Commander Beelzebub.]
• Ruler: Lucifer Pride
• [Monarchist Faction]: Satan Wrath, Asmodeus Chastity, Leviathan Grace
• [Anti-Monarchist Faction]: Beelzebub Temperance, Mammon Gluttony, Belphegor Sloth
Special System
[The Demon Realm is protected by a special barrier. It is a vast circular barrier created by Lucifer pouring his magic to prevent incursions from the heavens. Since Lucifer himself is the subject and central axis of the barrier, it has a variable characteristic where the barrier's domain moves along with his movements.]