The wonders of Anatrutica: A magical history book.

This book contains many short stories, first one is a story dedicated to the female audience. But if you'd still like to read this you can follow the male character's side, this story will be about an apocalyptic invasion by demons. But there's more to it than that, the female character will become a monster with a power to save the world. Suffering from the darkness inside her heart, the mysterious boys with the power to keep her darkness at bay appear. Together, they carry the weight of the world on their shoulders. However, there's a secret that nobody knows about the female protagonist yet..