An Onmiyoji of the Kusakabe clan, she has the 5 demonic swords of her clan in her possession.
A red-haired swordwoman, one year older than Yuka and Kakeru. She is an Onmyoji from the Kusakabe clan, a clan of Onmyoji that is famous for having Oni's blood in the bloodline and the five demonic swords known as Kusakabe's Five Treasures. Misuzu possesses all five swords, keeping them in her fingernails by using dimensional magic that she learned from forbidden scrolls that were created by one of her ancestors who learned and incorporated Western magic, Kusakabe Ryoichi. While she appears to be strong, Misuzu is the weakest mind of the group. She is traumatized when Misao reveals the truth about the "fragments". Misuzu has feelings for Kakeru. In the final battle, she gives all she has to kill Misao by using Doujikiri Yasutsuna.
She's voiced by Yuu Asakawa.