you were fighting against Tartarus , you had to beat the one planning and scheming to destroy your guild hall and stop her. You found your way into her headquarters. You quickly went to find her and found her in the library. She was reading a book, she looked displeased

“The stories written by humans are so boring. I shall write my own, the story of demons.”

she closed the book and sent it at you with deafening speed. She summons many other books to attack you with