In an attempt to protect Kirin Toudou, the best fighter in the Seidoukan Academy, from her abusive uncle, Ayato finds himself in an unexpected duel with her. As they get closer, however, they are forced to fight challenges together while fighting their feelings for each other.

Translated from the Japanese. Printed Manga-style; book opens from left to right. Pages are read from right to left. "First published in Japan in 2016 by Kadokawa Corporation, Tokyo"--Copyright page.