Motosu Urano, a book-loving college student who just got her Librarian certification and was supposed to enter the job of her dreams after graduation, was killed during a massive earthquake crushing her underneath a pile of her own massive collection of b

The world where the Hero and the Demon King continue to oppose each other. The grand magic from the Hero and the Demon King cross over worlds and exploded in the classroom of a certain high school.The students who died in the explosion will be reincarnate