Yomuin-san wa Yuusha ja Arimasenno de

Synopsis:

The protagonist is the janitor, neither a student or the homeroom teacher, after a certain lady genius with more power than knowledge unintentionally called dozens of pupils and teachers into a perilous world full of creatures and magic. The janitor did not acquire a soul-derived power at the time of their summoning, but the teachers and pupils did. A haughty student forcibly took away the janitor's power just as he was about to be given one that would protect him. After graduating from a third-rate university, he was unable to find employment and went three years without a contract extension. Despite being a 25-year-old contractor, he worked as a janitor for two years, earning less than ¥120,000 a month. He was thrown into a world that rejected him after being rejected by society. And that is what Janitor-san hoped the Goddess who felt sorry for him would grant him.