Huh? The Dark Cult I Made Up Became Real

Gu Jiu transmigrates to another world and spends eighteen years cultivating until he becomes invincible. All he wants is to quietly enjoy an ordinary life playing the role of a background extra. To look cool, he casually rescues a few unfortunate girls and offhandedly invents a fictional enemy called the “Dark Order.” But he never imagined that every one of these girls would be a force to be reckoned with. They take his chuunibyou nonsense as divine revelation and use it as their guiding doctrine to found the “Seven-Star Shadow Court,” an organization powerful enough to overturn the world! While Gu Jiu is still wondering how to play a convincing background extra today Ailiya: “Lord Shadow truly foresaw everything. We have put down the kingdom's rebellion!” Xierwei: “Following your instructions, we have uprooted every stronghold of the Dark Order!” Lili: “My lord, we've captured the hill you praised yesterday and made it our new base!” Gu Jiu: ???