The Testament of Sister New Devil, Volume 6 (The Testament of Sister New Devil #23-26)

Enraptured by the idea of school, Maria decides to drop in on Basara during class! Her visit soon turns into a full-on investigation of the school grounds... "in case of emergencies." A likely excuse, until an emergency involving Basara and Mio occurs in the girls locker room. Meanwhile, true danger on campus is rumbling in the distance... the fated treacherous battle will soon begin!