Trapped in a pint-size body thanks to the machinations of Kuesu Jinguuji, the dejected Himari is stuck in a rut as she tries to come to grips with her new, weaker form. But she doesn't have long to mope, as her former ayakashi opponent, the hinoenma Ageha, steals Yuuto away to have her way with him! With Shizuku's help, the buxom cat-spirit guardian of the Amakawa demon-slayer family awakens to her calling and rushes to the side of her lord! But while Yuuto has Himari to protect him, who will protect Himari and their other spirit friends when two powerful demons enter the fray in search of ayakashi blood?!