After being transmigrated into an SF world and enduring countless hardships, I rose to become the Emperor of the Galactic Empire. [Welcome to the Cross-Dimensional Community.] As the only SF transmigrator in the community, I've enlightened these primitive isekai dwellers with the wonders of advanced civilization. -Let there be light. The Goddess's apostle has sent down graviton bombs to judge the forces of evil, and with the light came a massive explosion... -The Grand Duke of the North has shown great interest in your heat-tech... -I, Mo of the Namgung family, am grateful for your ocean-like benevolence, great hero. With the ultrasonic blade you bestowed upon me, I have vanquished the vile cult members... It seems these isekai people still can't get their heads straight.