They saw... Episode 4

Kazuki is having nightmares that he is being attacked by a behemoth; at the same time, a rumor of a behemoth inside the campus is floating around. Dr. Akai, the school doctor, was sealing a behemoth in a forbidden room since he is not powerful enough to abolish it. As it turns out, there was another behemoth being raised by Nakamaru. Kuriko decides to battle the beasts, but they overpower her. To save her, Kazuki ends up using his magic. His magic count drops to five in this episode.