When Supernatural Battles Became Commonplace: Volume 13 by Kota Nozomi

At last, a long-fated reunion: Guiltia Sin Jurai and Kiryuu Heldkaiser Luci-First are face-to-face once more, and their meeting spells both the end of the Fifth Spirit War and the inevitable collision of their respective commonplace and supernatural tales!

Or at least...that was the plan. Stories, however, rarely develop in exactly the directions their authors intend them to, and Sagami isn’t the only character in Kiryuu’s tale who’s decided to jump the rails and take their role in a whole new direction. As plot threads, character arcs, and last second twists collide, it’s anyone’s guess who might have what it takes to thwart Kiryuu’s nefarious master plan for Andou and the literary club—or, for that matter, to figure out what his master plan even is.

The time has come. The die is cast. The beginning of the end of the beginning...has begun.