I Was Just Playing a Game, So How Did I Become the Savior?

[One heroine or no heroine] [Spiritual Qi Revival] [Interstellar] [The protagonist thinks it's a full-dive game, but it's actually the real world] [Behind-the-scenes mastermind] [Warfare in the early stages, development in the later stages] Gu Han transmigrates into the owner of a small planet in the Interstellar world. With several profitable planets to cover his expenses, he can enjoy a carefree life, eating and drinking to his heart's content. One day, a game suddenly pops up. The world changes, void rifts open, and ferocious beasts pour forth like a tidal wave, leaving devastation in their wake. But there's good news, too: Spiritual Qi Revival means everyone can cultivate. This is the description for the game Void Rift. The game Void Rift catches the protagonist's attention, and so... “Ah, this game is so hard. It's Hell Mode from the start.” “What the heck? You can voice chat, too?” “I'm actually taking part in a high-level meeting?” “Then let's do it my way.” P.S. He's a partial behind-the-scenes mastermind. He quells the war in the early stages and builds a home in the later stages. The female lead is just his younger sister. It's about building a career, not romance.