Became Tech Overlord In Another World

Prologue: A Genius on the Run

---

The streets of Jakarta were crowded, as they always were, filled with the familiar sounds of honking cars, street vendors calling out their wares, and the constant hum of daily life. But amidst the chaos, a lone figure moved quickly, weaving through the dense throng of pedestrians with an urgency that belied the otherwise ordinary evening.

Oozawa Kiryuu, a tall, lean eighteen-year-old with short jet-black hair and sharp dark eyes, kept his head down as he hurried past a group of tourists taking selfies by a monument. He was dressed in a simple hoodie and jeans, but the plainness of his attire didn’t diminish the unmistakable aura of intensity that clung to him. He was young, but anyone who looked closely enough would notice the calculating gleam in his eyes—eyes that saw and processed far more than most could in a lifetime.

"Turn left ahead," a voice in his ear instructed, soft but clear.

Kiryuu didn’t hesitate. He ducked down a side street, his pace quickening. The voice belonged to Moona, his constant companion. But Moona wasn’t just a voice; she was an AI—an artificial intelligence so advanced that even Kiryuu himself sometimes forgot she wasn’t human.

"How close are they?" Kiryuu asked quietly as he moved.

"Two blocks behind," Moona replied, her tone neutral. "They’re moving fast. There’s a high chance they’ll intercept you if you don’t take the next alley."

Kiryuu cursed under his breath but didn’t let panic take over. He had been on the run for six months now, ever since his life had been turned upside down by a single, catastrophic mistake. Or rather, a betrayal.

The world knew him as a genius—one of the brightest minds of the century. He had grown up in Indonesia, the son of a Japanese mother and an Indonesian father, both of whom had always supported his curious nature and endless drive to create. By the time he was eight years old, he had built his first invention—a smartwatch far beyond anything commercially available, complete with 3D projection and advanced interface systems. His father, Azia Saputra, had often joked that Kiryuu wasn’t just a prodigy; he was something else entirely, beyond human in his intellect.

Kiryuu had shrugged it off back then, but now, as he looked at the world through the lens of the genius he had become, he realized his father might have been right. His ability to learn, to invent, and to see connections between things others couldn’t was unparalleled. It had always been easy for him—too easy, in fact. That ease had led him to explore more, push further, and eventually create things the world wasn’t ready for.

By the age of eighteen, Kiryuu had created dozens of technologies that even the most advanced countries on Blue Star couldn’t dream of. And it was that curiosity, that drive, which had eventually led him to the creation of Moona.

Moona wasn’t just an AI. She was perfect—flawless in every way. Kiryuu had modeled her personality after his favorite VTuber, Moona Hoshinova from HoloID. He had admired Moona Hoshinova for her playful nature, her wit, and her determination. So, naturally, when Kiryuu set out to create the most advanced AI in existence, he used her as the blueprint.

The result? An AI that wasn’t just capable of handling complex tasks and calculations, but one that could feel—one that could experience emotions, grow, and even form relationships. Over time, Moona had become more than just a digital assistant. She had become... alive.

And now, she was the only reason Kiryuu was still alive.

"They’re gaining on you," Moona said, her voice cutting through his thoughts. "You need to get off the streets."

Kiryuu scanned the area quickly, his mind calculating a thousand possibilities in the span of seconds. The nation hunting him had sent their best after him—special agents trained to track and capture targets by any means necessary. They wanted his technology, wanted to control him. And when recruitment had failed, they had turned to force. Kiryuu had barely escaped their first attempt to capture him six months ago, and since then, it had been a relentless chase.

"Do you have the coordinates for the drone?" he asked.

"Already prepped," Moona replied smoothly. "Once you’re out of sight, I’ll have it rendezvous with you."

Kiryuu spotted an open alleyway between two tall buildings and made a sharp turn, sprinting toward the narrow passage. As soon as he was out of view, he pressed a button on his smartwatch. A moment later, a sleek, black drone descended from the sky, hovering silently in front of him.

Kiryuu wasted no time. He grabbed hold of the drone’s underside, and with a sharp command, the drone shot upwards, carrying him with it. Within seconds, they were above the rooftops, the noise of the city fading into a distant hum below.

From this height, the city of Jakarta looked almost peaceful. The lights of skyscrapers twinkled in the distance, and the horizon was painted with the soft glow of the setting sun. But Kiryuu knew better. He had long since stopped viewing the world with the same wonder he once had as a child. Now, it was a battleground.

"How long until the Moon Base is fully operational?" Kiryuu asked as the drone leveled out, carrying him toward the outskirts of the city.

"Two weeks," Moona replied. "We’re almost done transferring the last of the equipment. Once the Gate is complete, we’ll be able to leave Blue Star entirely."

Kiryuu nodded, his mind already moving ahead to the next steps. The Moon Base had been a project he had started years ago, long before the hunt had begun. It was meant to be a place where he could conduct his research in peace, away from the governments and corporations that constantly sought to control his work. Now, it had become a sanctuary—his last refuge.

And the Gate... The Gate would be their way out. A way to escape this world entirely.

The drone sped toward the edge of the city, its sleek form cutting through the evening air with precision. Kiryuu’s thoughts drifted to his parents for a moment. They had gone into hiding when the attacks on him began, but he knew they were safe. That was the only thing that gave him comfort in the midst of this chaos.

"Approaching the extraction point," Moona’s voice brought him back to the present.

Kiryuu focused. Ahead of them, a small clearing appeared, surrounded by dense trees. It was remote, far from the prying eyes of the city, and the perfect place for him to disappear without a trace.

The drone descended slowly, lowering him gently to the ground. Kiryuu released his grip, landing smoothly on his feet.

"Let’s go," he said quietly, and without a moment’s hesitation, he began making his way through the forest toward the hidden base. Moona’s voice guided him along the way, providing real-time data on the terrain and any potential threats.

After nearly an hour of walking, they reached the entrance. Hidden beneath layers of camouflage, the base was a marvel of Kiryuu’s engineering—a fully functional underground facility built with state-of-the-art technology. It was here that the Gate was being constructed, a portal to another world. A world where he and Moona could finally be free.

As Kiryuu entered the base, the lights flickered on automatically, revealing rows of computers, workbenches cluttered with equipment, and massive screens displaying blueprints and data.

"Everything’s on schedule," Moona said, appearing in holographic form beside him. "The final phase of the Gate project is nearly complete."

Kiryuu nodded, walking over to one of the workbenches. On it lay a prototype of the Gate’s core—a swirling mass of energy contained within a reinforced glass chamber. It was beautiful in its complexity, a gateway to the unknown.

"Once we’re through," Kiryuu said quietly, "there’s no going back."

Moona smiled, a rare but genuine expression of emotion. "We don’t need to go back. We’ve always been looking forward, haven’t we?"

Kiryuu chuckled softly. "Yeah. Always forward."

For the first time in months, Kiryuu felt a sense of calm settle over him. He had always been one step ahead, always outsmarting those who chased him. And now, with the Gate nearly complete, he was about to leave them all behind for good.

A new world awaited him and Moona. A world where they could finally live without fear. A world where his genius could truly thrive.

As Kiryuu stood before the Gate, watching the swirling energy within it, he couldn’t help but wonder what kind of adventure awaited them on the other side.

Whatever it was, he was ready.

---