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

After living for several millennia due to his immortality, Naruto Uzumaki finds himself involved in another big-scale war. To protect the people he loves, Naruto broke his oath to fight once again in his final battle. Crossover with Gundam Seed, Code Geass, Iron Saga, etc. Harem.