Underworld Invasion

The afterlife exists only so long as humans believe in it. In this world, a massive war erupts between angels and aliens, with the very fabric of the underworld at stake. Kim Ria, the last surviving human on Earth who has no lingering attachment to life, and Azazel, an angel who despises the Lord exiled from the afterlife, become the twin pivots upon which the fate of both humanity and the underworld turns. In the realm of the dead, angels and aliens clash in escalating ability duels that grow into an all‑out war. At the same time, on the ruined Earth, Azazel and Kim Ria undertake a tense, small‑scale survival adventure as they evade pursuit squads hunting the final human. Eventually, even Hell’s Lucifer forms an alliance with the angels, pushing the conflict toward an unimaginable, apocalyptic climax.

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