6 decades books

Here in Tokyo, paranormal phenomenons began taking place. Some said this is the work of spirits. Others sticked to their sense of logic and said that there has to be a scientific reason for these phenomenons. No matter how many opinions are there, there is only one truth. Hirigaya Yuto begins to get involved in these phenomenons, thanks to these phenomenon, a secret organization was formed and some of their members came to Yuto''''s school and formed the occult researh club. Which its secret motive is to kill demons. Yuto decides to join them, so begins Yuto''''s life as a demon hunter.