Nao can't hold out much longer against the fatal effects of his mixed-race curse. He needs divine power, but the only offer on the table is from Satsuki, who left Nao to die in the dust the last time they met. Nao is torn between his distrust of Satsuki, his desperation for survival, and his loyalty to Tsuzuki. When the next Crusade begins, which side will Nao really be fighting for?

Nao and Hinata quickly realize that infiltrating Kamuhaburi will be far more difficult than spying on Tsuzuki or even Arcana. Their first objective is to find a way to contact Izumi--and when they do, they aren't happy with what they hear. Izumi wants to recover not only Arcana's stolen relics, but all of the relics Kamuhaburi has collected as well. But there's more he's not telling them, and even more their Kamuhaburi guide, Kanade, is holding back. With no one they can trust, the squabbling spies must work together to complete their mission or be trapped inside forever!

Nao's sacrifice has proven his loyalties once and for all, and in the smoldering wake of his subordinate's final effort, Tsuzuki must regroup and reassess before the next Crusade begins. The struggle to glean information from the prophecy books continues, and what the angel learns next casts a dark shadow over his campaign. Satsuki may not have been the worst of his enemies in the fray...and with Tsukimiya brainwashed, who will fight for Tsuzuki's cause?!

Tsukimiya has fallen directly into the hands of Arcana and Satsuki, but her enemies seem more interested in the mark she bears than in the half-blood herself. But what is Hinata interested in? The intentions of Tsukimiya's former, albeit temporary, ally seem to oscillate between altruistic and self-serving as the would-be gods plot to use her as a living sacrifice! Betrayed, bloodied, and left for dead, Tsukimiya resolves to seek the truth of the curse on her own terms-and by any means necessary...

Tsukimiya and Hinata thought they had secured at last the divine power of God that will allow them to break their deadly curse, but they and Tsuzuki are not the only ones after the power. Even as Tsuzuki collects the power that will fuel his ascent to omnipotence, there is one who would see him brought crashing back to Earth. As both sides race toward the prize, Tsuzuki calls on the half-bloods Tsukimiya and Hinata to join the hunt and prevent the power from falling into dark hands...

The newly formed alliance between Tsuzuki and Arcana has Tsukimiya on edge. She's certain the organization has its own agenda for God's Relics. But more pressing matters have come to light: Every location where God's Relics have appeared has been destroyed by an organization that calls themselves the God Buriers--and its next target is the Arcana building itself! Tsukimiya has little trust to spare for Arcana, but she'll have to work with Arcana if either of them want to escape with their lives--and their relics!

Reiga reveals the truth behind the Sunset of the Underworld, the cataclysmic event that led to the interminable conflict between him and the Giou clan more than a thousand years ago. What happened to Yuki, Luka, and Takashiro at the beginning? In this war of betrayals, what fate awaits the soldiers...?