Inner Demon: The Invasion

Inner Demon: The Invasion



When the sky bled red and the distant planet Quav crumbled under an unseen force, Earth did nothing… because it knew nothing. But the Emperor did—and he kept it secret.



In a world ruled by the powerful Daichi no Haō, guarded by seven ancient Wizardry Guilds, peace shatters as the skies crack with lightning and souls from another world begin their silent invasion.



In the frost-bound city of Sōshō-to, a young aspirant named Arata Kiryū trains with friends and dreams of mastering powerful spells to impress his crush—unaware that a nightmare is brewing beneath their feet. When a practice session turns into a battlefield and his friend Akane is possessed by an otherworldly force, the soul-sealed truth begins to surface.



As the Emperor is mysteriously assassinated, leaving behind a cryptic blood-written message and a sealed diary of forbidden knowledge, all seven guilds are forced into an uneasy alliance. The invading spirits, called Yūmeikages, are not mindless monsters—they are calculated, relentless, and already among them.



With Great Sensei Nakashima Tsukiko leading the charge, a resistance forms. Anti-Soul suits, ancient sealing chants, and a desperate elite unit called Kurogane-tai (Iron Unit) are Earth’s last hope. But will it be enough?



As Arata, Akari, and the guild candidates prepare to fight for their world, one truth becomes clear:



The invasion isn’t coming. It has already begun… from within.