Have you ever heard of a world called Techtopolis? It's a hidden dimension behind the Earth's moon. There, two goddesses are worshiped. After escaping a dying planet Earth, the human race takes to the stars! Local politician's son, Rei, has his ship mysteriously rerouted to Techtopolis, where he and a Techtoplian named Angel lead their species on an adventure to save the universe from a Death Goddess! (Inspired by Fire Emblem Three Houses)