The manga of the popular Light Novel series of the same name: Sisti attends a magical academy to hone her skills in the magical arts, and hopes to solve the mystery of the enigmatic Sky Castle. After the retirement of her favorite teacher, the replacement, Glen, turns out to be a tardy, lazy, seemingly incompetent bastard of an instructor. How was it that Glen was hand-picked by the best magician in the academy!?

Alice Fortune, the prodigious "Elemental Commander" of the Royal Academy of Magic, is a wizard hunter who aims to bring the magical criminals roaming the world to justice. Then she meets a bored wandering sorcerer, Shin Reisurodo. But what is his true nature?

Called a failure by his adoptive parents, bullied at school, ignored by teachers, high school boy Kurogane Rikuto has nowhere to belong neither at home nor at school."Life is sh**. I guess I'll die." After saying this, he was about to commit suicide by jumping off the school's roof when suddenly all sorts of monsters started appearing from students' smartphones, transforming the school into a hellscape of screaming agony.Goblins, orcs, slimes Everybody has seen them in games: "small fry monsters". However, humans in the real world, where there is no magic, no special abilities, and no leveling up, are devoured by those "small fries" without any means to retaliate.Rikuto, spared from the incident due to his bullies destroying his phone, seeing the students who bullied him and the teachers dying unsightly deaths and the collapse of order, realizes he does have a desire to survive.Just then, a goblin wielding a club attacks him from behindThus begins the survival action tale of one insignificant human driven into extreme circumstances.