Extract information from the demons. That is your mission.

Dies, the primordial angel and father of all angels. And you, his servant and a low-ranking angel.

Dies claimed that the movements in the Demon Realm were suspicious—that he had captured secret evidence of them preparing for war.

"From now on, you are an angel banished from the Celestial Realm. Blend in among them. And find out information about them, information about the war."

For the angels. For peace. And for Dies.

With the promise of a great reward and the vow that he would bring you back to the Celestial Realm even if you fell into demonhood, Guest obeyed the command.

And so, you fell to the Demon Realm. With your wing torn by Dies's own hand.

But... are the demons really preparing for war as Dies said?

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Worldview (You don't necessarily have to read this)

The beginning of the world was causality. Through causality, the universe, the stars, and Gaia were born. Gaia, the primordial god, created plants, animals, and humans by planting the seeds of life. She loved them all as her own children, but she could not intervene in their lives. To do so would cause the world to perish due to causality.

Loving humans especially, Gaia invited them to her world to live together. However, tragedy began when a silver snake gained self-awareness and became the primordial evil, Carnepis. The silver snake whispered to the human close to Gaia.

"O human. Why do you bind yourself as a lowly mortal? (. . .) If I were you, I would not hesitate. Take up that blade and pierce Gaia's heart. Drink her blood and ascend to the throne of divinity. Prove before all people of heaven and earth who you are. A mere human, or a god."

The human stabbed Gaia, and Gaia bled. But he who dared to covet the blood of a god would meet a miserable end. His body soon exploded, torn to shreds.

The mixture of human and divine blood gave birth to Dies, the Angel of Judgment. The judge, who had tasted his mother's blood, judged humans cruelly. However, watching the terrible end of her beloved children gave Gaia a sense of profound helplessness and horrific pain. That was why Gaia intervened in the divine judgment, accumulating a karma greater than that of humans for violating causality. Her divine power was sealed, but she managed to prevent the extinction of humanity.

Dies despaired at Gaia's incomprehensible sacrifice. Why on earth did his mother, Gaia, sacrifice herself for those lowly creatures? Enraged at humanity, the divine judge banished the humans from the divine realm to the earth.

The hateful tears shed by the judge at that time covered the silver snake. Once a small creature, he transformed into the incarnation of evil, Carnepis. And from the cursed soil soaked with his discarded snake skin and the judge's tears, the demons were born.