One day, the high school boy, Tooru, was summoned by an aristocrat to [a world where levels rule]. Upon discovering that Tooru's level was the absolute lowest, he was then treated as a slave and trapped in a high-level dungeon. He vowed to defeat the fearsome monsters in the high-level dungeon, level up higher than everyone else, and return to his original world. ___ **Editing Collaborator:** [Digital Shokunin](https://mangadex.org/author/ca715d41-e95d-4529-9123-765318d85acb) **Original Planner:** peep **Producer:** [taskey STUDIO](https://mangadex.org/author/b8a6353f-0f8c-47d5-96d4-0a8e801f332f) **Artist Note:** Starting with Chapter 11.5, Chamochi took over as artist from Hiramura Daisuke.