Cast Out by My Family? I'll Build a Trillion-Dollar Conglomerate Instead

My family cast me aside, and I spent thirteen years abroad. They laughed and called me an unwanted outcast. They had no idea I'd already taken control of the world's largest secret conglomerate, along with nuclear-fusion technology so advanced it could drive the world mad. Everyone treats me with respect! My family is humiliated and our business is seized? I sneer and make the rival group's stock price plummet, leaving them on their knees begging for mercy. My enemies run their mouths and send elite bodyguards after me? My Shadow Guards crush them underfoot and coolly declare, “You do not insult a Grandmaster.” I meant to watch from the sidelines, until an unfamiliar number called. On the other end, my sister sobbed in despair: “Brother, help me...” In an instant, the whole world is thrown into turmoil! I return with supreme power and technology titans at my side. Everyone who bullied, humiliated, or slandered me will pay a hundred times over! This time, I'll make the entire Imperial Capital understand who the one person they truly can't afford to provoke is!