Satan has been driven back. The forces of Gehenna have been repelled (for the time being, at least). Class 1-A has returned to UA, and Rin has resumed his exorcist training at True Cross. Despite parting ways, things are going great. But, with the opening of the Gehenna Gate, demons are spilling through the cracks all...
Kill a demon. That was the only instruction given to Class 1-A before the students were sent on a mission to a school none of them have ever heard of before. True Cross Academy, a place for the incredibly gifted. And for the quirkless. Unlike anything any of them have ever seen, the class are instantly on their guard...