Mha: The Tech Genius

Katsuo Yamada's bedroom, if it could even be called a bedroom anymore, had transformed into something else entirely—a workshop. The once neat space, carefully maintained by his mother, was now cluttered with gadgets and tools, stacks of papers filled with blueprints, and half-assembled machines scattered across the floor. Small electric lights buzzed on his workbench, illuminating the chaos in a soft glow. The air smelled faintly of soldering iron and burnt circuits, an aroma Katsuo had come to associate with progress.

Though his physical appearance had barely changed over the past few months—aside from his rapid growth and the usual signs of a young child adapting to life—his mind had evolved far beyond its years. The AI chip embedded in his brain constantly fed him knowledge, ranging from simple concepts like basic arithmetic to far more complex fields like mechanical engineering, quantum physics, and advanced electronics. There was no question in his mind about how his ability to absorb information had transformed his life. It was no longer about learning at the pace of his peers; it was about mastering the impossible.

"Another drone?" Aiko, his mother, asked from the doorway, a familiar amusement in her voice as she watched him solder wires into a small metallic frame.

Katsuo didn't look up from his work, his fingers deftly twisting the components together. "It's more of a reconnaissance unit this time," he explained, his voice focused. "Something compact but powerful enough to be useful in real-world situations."

Aiko sighed and leaned against the doorframe, crossing her arms over her chest. "I'll never understand why you always feel the need to take things apart. You're barely seven, and you've already made a whole bunch of things I don't even recognize."

Katsuo smiled slightly, not missing a beat. "It's not that I take things apart. I'm improving them."

Aiko raised an eyebrow, clearly skeptical. "Improving? I've yet to see you fix anything around the house. Last week, your father asked you to help with the faucet, and you ended up flooding the kitchen."

"That was a learning experience," Katsuo quipped, not even bothering to look up from the circuits. "You see, the valve was rusted, and I had to redesign the way the water pressure worked. I didn't account for the buildup—"

"Katsuo," Aiko interrupted with a soft laugh, "the whole kitchen was flooded because of you."

He shrugged casually. "Well, the faucet works better now. Maybe you should test it yourself."

Aiko shook her head, exasperated but fond. "I'll leave you to it then. Just don't end up blowing up the house again, okay?"

"Don't worry, I've already accounted for that," Katsuo replied matter-of-factly. His mind was already moving forward, the spark of creation pushing him toward his next breakthrough.

In the weeks that followed, Katsuo's projects became increasingly complex. What had once been simple experiments with household tools quickly grew into a more serious pursuit. The drones, once tiny and inconsequential, were now sophisticated reconnaissance units. They were small enough to be unnoticed by most people, but their range and accuracy were anything but basic. He'd incorporated an array of sensors—infrared, motion tracking, and even rudimentary AI to allow them to make real-time decisions. These weren't toys anymore; they were tools, designed to perform in ways that normal humans could not.

His mother, though still wary, had slowly come to realize that Katsuo was not just an unusually smart child; he was something more. Still, she didn't fully understand the extent of his talents, nor did she truly grasp the implications of his rapidly developing abilities.

One afternoon, while Katsuo worked on perfecting his drones, there was a knock at the door. It was a rather peculiar sound—rhythmic, almost mechanical. Katsuo glanced up from his desk, frowning slightly as he heard the steps of a person outside.

When he opened the door, his eyes widened in surprise. Standing on his front porch was none other than a local hero—Steel Fist. A renowned hero in the city, known for his sheer physical strength, Steel Fist was a symbol of what the world might consider a typical hero. He wore heavy armor that was as much a part of his identity as his quirk, which enhanced his strength to inhuman levels. However, it wasn't his physical prowess that piqued Katsuo's interest; it was his mechanical suit. It was clear that it was not a mere enhancement of Steel Fist's quirk. It was tech.

"Are you Katsuo Yamada?" Steel Fist's voice was gruff, but there was a hint of curiosity in it.

Katsuo stood there for a moment, unsure how to respond. This was the first time a professional hero had come to his doorstep. In fact, he hadn't even considered that his creations might catch the attention of someone so prominent. "Yes," he replied cautiously, looking up at Steel Fist. "Can I help you?"

The hero looked around, taking in the scene inside Katsuo's room. The walls were plastered with blueprints and sketches, the workbench cluttered with parts and tools. Steel Fist raised an eyebrow at the sight. "Impressive," he said. "I've been hearing some rumors around the neighborhood. They say you're quite the prodigy when it comes to engineering."

Katsuo's expression didn't change, but his heart raced. He had worked hard to keep his talents under wraps. He knew better than to reveal everything, even to someone like Steel Fist. "I'm just a kid who likes building things," he said with a shrug.

"Kid? You're not fooling anyone," Steel Fist chuckled. "Look, I've got a problem, and I think you're the person who can help me."

Katsuo stepped aside, motioning for the hero to come inside. "What do you need?" he asked, his curiosity piqued.

Steel Fist walked over to the workbench, carefully placing his gauntlet on the table. The armor was battered, the metal cracked and scorched in places. "I'm in need of an upgrade. My current suit's power system is getting old and inefficient. It's starting to overheat in battle, and I need something more... streamlined."

Katsuo examined the gauntlet closely. "I can see why that's an issue," he said, studying the internal circuits. "This thing runs on a basic power grid, but it's not optimized for sustained energy use. You're burning through more power than you should. I could redesign the core circuitry and add a cooling mechanism to prevent the overheating. The energy transfer system could also use a boost."

Steel Fist blinked, clearly surprised by how quickly Katsuo had assessed the situation. "You're not just some random genius kid, are you? How old are you again?"

"I'm... seven," Katsuo said, matter-of-fact. "But I've been working on this stuff for a while. I'm not just a kid. I know what I'm doing." He wasn't bragging—he was simply stating facts.

"I see," Steel Fist muttered, rubbing his chin thoughtfully. "Alright, kid. How long would it take you to get this fixed up?"

Katsuo's mind raced. Steel Fist was trusting him with his suit. It was a heavy responsibility, but Katsuo felt the thrill of the challenge. "It'll take a few days to redesign the circuits. I'll need parts from the junkyard too, but I can handle it."

"Good," Steel Fist said, his tone softening. "I'll leave it in your capable hands. Don't disappoint me."

Katsuo nodded, though his mind was already thinking ahead. This wasn't just about upgrading Steel Fist's suit. It was about something much bigger. If Steel Fist trusted him, maybe others would too. He could build something that would change the course of the world—a tool that could protect people who didn't have powerful quirks, just like him. The thought excited him, made his heart race.

In the days that followed, Katsuo worked tirelessly. He sourced materials from the junkyard, carefully studying each piece before he used it. The AI chip in his mind helped streamline the process, suggesting the most efficient way to assemble the parts and ensuring that his designs wouldn't fail under pressure. This was more than just a simple project. This was a test—a test to see just how far he could push his abilities, and whether the world would take him seriously.

The suit, when completed, was nothing short of extraordinary. The energy grid was refined, the overheating problem solved, and a new power transfer system was added that doubled the suit's efficiency. But the true innovation came in the form of the cooling mechanism Katsuo had invented. By integrating an advanced thermal regulator, he had essentially given Steel Fist's armor a near-infinite operational time, something that was unheard of for a suit that required so much power to function.

When Steel Fist returned to pick up the gauntlet, Katsuo handed it over with pride. "It's ready."

The hero examined it, clearly impressed. "Kid, this is better than anything I could have ever imagined. I'm in your debt."

Katsuo simply nodded. "Just don't make me regret it. Test it out, and let me know if it needs any tweaks."

Steel Fist chuckled. "I don't think it'll need any adjustments. I'll see you around, kid. And remember, you've got something special here. Don't waste it."

As the door closed behind him, Katsuo allowed himself a small smile. It wasn't about fame or recognition. It was about making a difference—a difference that could reach beyond the confines of his small bedroom and into the vast world of quirks, heroes, and villains.

For the first time, Katsuo truly believed he was on the path to something monumental.