Following their arrival at the academy, Atsuko and Sayaka savor the freedom to nurture their deepening connection away from outside eyes. Yet an unintended act soon fractures ancient seals, releasing a long-dormant entity that preys upon the desires of young women. Strange disturbances begin to ripple through the once-serene campus, forcing the pair to question whether their sanctuary has become a trap. As unease mounts, they realize their greatest challenge may lie not in classes but in resisting the shadow now awakening around them.