Midnight Sigh

This is a ghost story that takes place in a women's college run by Japanese. In the single dormitory of Haruko Inoue, the general secretary of the school, every midnight, the portrait of the emperor hanging on the wall would let out a creepy sigh, and even people would be moved out of the dormitory without knowing it. The Japanese military police sent people to move into this dormitory. Not only did the sigh remain the same, but the three military policemen were also moved naked to the playground. Japan sent experts with advanced instruments for detection, but to no avail. The sighs, ghosts moving and other incidents have not yet been discovered, but ghosts appear again on campus. In the middle of the night, a female ghost often appears crying and walking under the dormitory wall. Subsequently, another fire broke out inexplicably in the school cafeteria and auditorium. So, what is the truth of the matter? Are there really ghosts in the school?