Gear's Odyssey - The Legend of Menma

Namikaze Menma was sent to another world with his classmates. In this world called Ignas, there's a unique power called Aura which is used to operate machines called Gear. Earthlings are summoned to be employed because they tend to have a high Aura. While several of his friends were have the highest Aura value in summoning history, Menma's Aura value was only 2. AU Crossover. Harem