About the book: year / Yastra is one of the countries where the main character of this story, Lisa, lives. She is a member of a secret government organization that is engaged in the extermination of those who are a particular threat to the country. At first, Lisa appears before us as a very kind girl who is ready to help everyone. But will she be able to remain the same as the story progresses, or will she succumb to cruelty and hatred? This remains to be seen. One day Lisa fell into the hands of Rika, the most important among the demons, where she spent some time and managed to become attached to her. The main problem for Lisa is that if others find out about this, it will be perceived as a betrayal, what Lisa doesn't want. This leaves her with a difficult choice. The problem worsened even more when she met a new friend, Feirin. For now she can live in peace, but one day Lisa will still have to choose a side.