by Shadow e-17(KAGETEI)
In the far future, Earth becomes a Type II–III civilization and masters AI, space warfare, and dimensional travel. During a dimensional mission, Commander Kael Astraeus and his squad accidentally enter a fantasy world ruled by demons, witches, and magic. For one week, their futuristic weapons and aircraft devastate battlefields, causing the world to fear them as legendary beings called the “Skyborn.” Nobody realizes they were human. 3000 years later, Kael dies in Earth’s final war and reincarnates into that same world as a weak prince named Aether Solis. As his memories return, he begins rebuilding technology, saving persecuted witches, and creating a new civilization. But when the Skyborn return through the heavens once more, the world finally learns the terrifying truth: The gods they feared… were humans from Earth.
