Reincarnated in DxD With the 100X System

After the whole "Malrik finally looks like an heir" family moment, my dad clapped me on the back with a wide grin.

"Since you're shaping up to be a fine young man, I think it's time you start managing real money."

I blinked. "Uh… what?"

He pulled out his phone, tapped a few times, and turned the screen toward me.

A bank transfer confirmation.

10,000,000 yen deposited into my account.

"Just a little something to get you started," he said casually, like he'd just handed me lunch money instead of the equivalent of nearly $70,000 USD.

I gawked at him. "Dad, this isn't 'a little something.'"

"You're a Van," he said proudly. "Consider it an allowance upgrade. If you want to impress the world, you need capital."

I sighed, but internally? I was pumped. A fat bank account was never a bad thing.

Pulling out my phone, I opened my bank app to admire my new, shiny eight-figure balance.

And then I froze.

My balance wasn't 10 million yen.

It was 1 billion.

My hands trembled. My jaw slackened. My heart nearly stopped.

"Wait, wait, wait—my System multiplies money too?!"

I stared at the screen, refreshing it over and over, but the numbers didn't change. One billion yen.

I sucked in a sharp breath, gripping my phone like it might explode.

"Did I just… break capitalism?"

I turned to my dad, my face completely blank. "Uh… how much did you say you transferred again?"

"Ten million yen. Why?"

My fingers tightened around my phone. "Oh… no reason."

My mother glanced over, raising an elegant brow. "Malrik? You look as if you've just seen a ghost."

"Not a ghost. More like a financial miracle."

I needed to test something.

"Uh, excuse me for a moment," I muttered, dashing toward my room like a stockbroker who just discovered infinite insider trading.

I slammed the door behind me, heart pounding in my chest. This was it. The ultimate test.

Step 1: I transferred 1,000 yen to a separate account.

Step 2: I refreshed the app.

Step 3: My heart stopped.

100,000 yen.

"HOLY—!"

I nearly yeeted my phone across the room. It worked. It freaking worked. Every yen I moved got multiplied by 100.

My breath turned shallow. My hands trembled. This was beyond broken.

I tested it again.

10,000 yen → 1,000,000 yen.

100,000 yen → 10,000,000 yen.

I stared at my screen, brain short-circuiting.

"I am literally printing money."

I collapsed onto my chair, gripping my head. This was ridiculous. Unlimited physical strength was one thing, but unlimited wealth?

With this, I could:

✔ Buy an entire mansion outright.

✔ Fund my own multinational company.

✔ Bribe my way into literal royalty.

…Okay, maybe that last one was a bit much.

I took a deep breath, trying to calm my capitalist fever dream.

"No one must know about this."

If the government caught wind of this? Economic collapse. The yen would implode overnight. Banks would panic. The global economy might never recover.

I had to play it cool.

I took a deep breath, preparing for the next phase of my experiment.

What if I stacked the glitch?

My fingers hovered over the transfer button.

Step 1: Move 10 million yen into another account.

Step 2: Refresh the app.

I pressed it. The screen flickered.

My pulse hammered in my ears. The moment of truth—

Balance before: 10 million yen.

New transfer: 10 million yen.

Total balance: 10 million yen.

…

…

Wait.

I blinked.

Refreshed the app.

Again.

Still no multiplication.

A cold pit formed in my stomach.

"Oh no. No, no, no—!"

I ran the test again.

100,000 yen → 100,000 yen.

1,000 yen → 1,000 yen.

Nothing. No multiplier.

I clenched my jaw. Had the System just… nerfed me?

I groaned, slumping back against my chair. So much for infinite money.

"Wait, maybe it only works when given freely?"

I casually strolled back into the living room, where my parents were now relaxing after their trip.

"Mom," I said, flashing my most angelic, trustworthy smile.

She looked up from her crystal glass of wine, eyes narrowing slightly. "Yes, dear?"

"Could you send me some money? Y'know, just a little boost—nothing major."

She raised an elegant brow, clearly amused. "Didn't your father just transfer you a rather generous sum?"

"Uh, yeah, but—"

"How much are you asking for?"

"...Another 10 million?"

She sighed but pulled out her phone anyway. A few taps later, my bank app buzzed with a new deposit.

I opened it immediately, already picturing the numbers skyrocketing again.

Balance before: 1 billion yen.

New deposit: 10 million yen.

Total balance: 1 billion and 10 million yen.

…

Wait.

I blinked.

I refreshed the app.

Still the same. No multiplication.

I stared at the screen.

"Uh-oh."

Maybe it was just a fluke?

I turned to my dad, trying to keep calm.

"Hey, Dad, think you could send me another ten million? Just, you know, as a test."

He gave me a look. "A test for what?"

"...Science."

He sighed but complied, sending another 10 million yen my way.

I held my breath, watching my phone like a stockbroker on the verge of a breakdown.

Balance before: 1 billion and 10 million yen.

New deposit: 10 million yen.

Total balance: 1 billion and 20 million yen.

Still no multiplication.

"Oh, COME ON!"

At this point, I wasn't an idiot. The pattern was obvious.

If I asked for it, the System didn't activate.

I slumped back into the couch, dramatically covering my face with both hands.

"Of course, nothing's ever completely broken. Guess even cheat systems have fine print."

My mother, now very intrigued, watched me over the rim of her wine glass. "Malrik, dear, what exactly are you plotting?"

I groaned. "I thought I found a loophole to infinite wealth, but turns out, my superpower is generosity-based. If I ask for money, nothing happens. But if someone gives it to me of their own accord—boom. 100X multiplier."

My dad nearly spit out his drink.

"You're saying… any money we randomly give you increases by 100 times?"

I nodded.

Silence.

My father's mouth opened. Closed. Opened again. His fingers twitched, like he was mentally calculating the GDP of small nations.

My mother sipped her wine, watching me like I was a highly volatile stock option.

Finally, my father turned to her.

"Aria, do we need to call a tax lawyer? Or a priest?"

I leaned back in my chair, staring at my phone screen like it held the secrets of the universe.

Alright, time to recap.

Training, learning, or anything self-improvement-related? → 100X instant results.

Anything given to me randomly? → Multiplied by 100.

Anything I explicitly ask for? → No multiplier.

My cheat system was powerful—absurdly powerful—but it wasn't just a mindless OP hack. It had rules. Limits.

And more importantly… it had loopholes I could exploit.

I tapped my fingers on the desk, thinking strategically.

Step One: Level Up Like a Protagonist

First things first—I had zero excuses not to become a physical and intellectual powerhouse now.

Strength, speed, endurance? Instant gains.

Martial arts? I could learn decades' worth of combat skills in a single week.

Knowledge? If one book equaled 100 books of comprehension, I could outlearn actual geniuses before breakfast.

"At this rate, I'll accidentally become the world's strongest and smartest man."

And that? Was exactly what I intended to do.

Step Two: Become a Magnet for Rewards

The real game-changing mechanic was the 100X reward multiplier. If people naturally gave me money, items, or anything of value, I won the lottery every single time.

Which meant I needed to engineer situations where people just… felt like rewarding me.

"I've gotta become someone people naturally want to give stuff to."

That meant:

✔ Boosting my charisma. If people liked me, they'd be more inclined to be generous.

✔ Building connections. The richer or more powerful my friends, the bigger my "random" gifts.

✔ Mastering social influence. If I could get into situations where spontaneous generosity happened regularly, my wealth would never stop growing.

I paused, rubbing my chin.

"So what you're saying, System… is that I need to become irresistibly likable and filthy rich at the same time?"

I let out a slow, devious grin.

"Charisma training, here I come!"

Step Three: The Trillionaire Hero Path

If I played my cards right…

I'd be insanely strong.

I'd be insanely intelligent.

And I'd be insanely rich.

…Which meant I had a real shot at becoming a literal legend in this world.

"At this rate, I'll become DxD's first trillionaire hero!"

I chuckled to myself, already envisioning my future empire—a hybrid of power, wealth, and social influence.

This wasn't just luck. This was my destiny.

And I was going to milk every last advantage out of it.

I stood by the window, hands in my pockets, gazing out at the sprawling cityscape beyond the mansion grounds.

In the distance, Kuoh Academy stood tall, an ordinary school on the surface—but one brimming with supernatural chaos underneath.

A slow grin spread across my face.

This world had no idea what was about to hit it.

The game was rigged, and I held every single cheat code.

With my 100X System, I wasn't just going to be another student.

I was going to break every limit. Rewrite every rule.

No more side characters. No more shadows.

It was time for the main event.

I stretched, my body thrumming with limitless potential.

"Get ready, Kuoh Academy—Malrik Van is coming, and you've never seen someone multiply everything this much."