When the roof of the library popped, the daily life of Fukubu Chiya was destroyed together. The roof of the library was blown off as the youkai called the fiery which was contained in a old book of the library was unsealed. The existence of youkai that erodes human society from darkness. It attacks people at night, eats, violates, kills... It was nothing but a natural enemy for humans. In order to fight youkai, Chiya challenges youkai with the help of old books. It is a story of a person fighting in front while being exposed to rape and humiliation.