In the ancient Eastern Continent, there was a group of people called "Demon Exterminators" who were responsible for dealing with the "monsters" of consciousness that were born from resentment.
In 2577, a girl and her brother officially embarked on the road to become demon slayers, but their master told them that their new partner was... A demon? !
And these new partners seem to be no ordinary people? !
The life experiences of several people seem not to be simple...
Intention:.