Rinne, a girl who cannot see faces and is from a family of exorcists, heads to her first mission with the power of the storm god, Yakumo. They defeat a series of specters, but face an unforeseen monster with black crystals and infinite regeneration. As their situation becomes critical, the mysterious man, Jugemu, saves them.

Jugemu, who possesses the power to destroy the regenerating monsters, is supported in battle by a woman named Neo. Rinne questions them about their identities, the monsters' true nature, and the "Master Orb" that Jugemu mentioned, but the two give no answers. The next day, however, Rinne notices that Jugemu is tailing her on school premises.

After Jugemu and his allies defeat a horde of monsters known as "core holders" who were attacking the city, a new swarm appears, accompanied by a masked man who targets Rinne's estate. Jugemu and the others move to intercept, but they are overwhelmed by the immense power of the Ruinous-class monster Shuringala, summoned by the masked man. The man then reaches for Rinne...

Leaving Masamune's world, the group travels to another world whose Master Orb was stolen. They arrive at a battlefield where the revolutionary army, led by the military genius Kirinji, fights an army of grotesque "Core Beasts." The team offers to fight alongside Kirinji's forces. Amidst the conflict, Yakumo notices a heavy burden that Rinne is secretly grappling with.

The masked man shatters the barrier protecting the White Archive and a massive army of core holders pours inside. His goal is the Primordial Orb, said to be sealed in the deepest chamber of the Archive. With Jugemu absent, the one who stands in the World Reaver's way is the guardian deity of Strike Island-Godstriker.

After transforming into a flame monster, Anger is finally defeated by Jugemu. But suddenly, another World Reaver appears and cuts Jugemu in half. Witnessing this, Rinne awakens, and her spirit gun unleashes a massive blast of light that hurtles toward the World Reaver!

Having reclaimed the Master Orb from the World Reaver Nowhere, Rinne awakens to her true power. But Nowhere, too, transforms into a terrifying monster, declaring that he "won't look at what doesn't need to be seen" as he attacks with overwhelming might. Yet within Rinne burns with the strength of all the bonds she has forged... The final battle between Rinne and Nowhere begins.