Because Janitor-san Is Not a Hero

Part of an academy was summoned to another world, but the protagonist is the janitor. A certain girl genius of a magic school, accidentally summoned dozens of students and teachers.

At that time, students and teachers gained power but not the janitor (three years without a contract extension, failed to get a job after having graduated from a third-rate university, somehow still a contractor at 25 years old, as janitor 2 years, with a take-home monthly salary of less than ¥120,000).

And what janitor-san wished from the Goddess who took pity on him was…