The Reward for the World's Strongest Explorer's Perfect Dungeon Conquest is apparently Marriage to me, who is known as an S-rank Fraud - Chapter 13

“Shia is way too fast!? She’s already on the 70th floor!?”

After arriving at the dungeon, I waited for Eri-chan for an hour. It was expected that it would take some time for her to retrieve the master drone, so there was no helping it.

Once I received it, I immediately dived into the dungeon and checked Shia’s location. The result? The 70th floor.

She entered the dungeon about an hour and a half ago. This is beyond monstrous.

“Damn it! My record is the 70th floor! What the hell am I supposed to do now!? No, surely Shia will come back soon, right?”

I hold the record for reaching the deepest floor of the Shibuya Dungeon. That means there is no existing data beyond the 71st floor. Even I, as reckless as I may be, wouldn’t just charge into completely uncharted territory without any preparation.

“Shia, be a good girl and stop at the 70th floor. Better yet, just return. Don’t even think about seeing how far you can go!”

Muttering a desperate plea, I broke into a sprint.

“Out of my way! Move it! Sorry, but I’m one-shotting you!”

Before the lights in the boss room could fully illuminate, I drove my fist—charged with highly compressed mana—straight into the boss’s stomach.

The moment of impact ignited the ultra-compressed mana, crackling as it caught fire…

In an instant, the boss’s body burst apart like fireworks, right along with my right hand. The only skill I possess—Mana Rebellion.

“A technique where I lose a limb every time I land a hit on a boss? No one else would use such a ridiculous, inefficient move.”

The only reason I can manage this is thanks to my unique trait—Nosferatu, the Undying. With an overwhelming amount of mana and an abnormal absorption rate, no matter how many limbs I lose, or even if my entire body is turned to mincemeat, I will regenerate automatically—a supernatural phenomenon.

“I’ve stopped being human, huh? I really am just a monster now. Hahaha!”

Ignoring the lesser enemies, I rushed into the next boss room—sacrificing my right hand once again to light up another gruesome firework.

I cleared 20 floors in a flash.

At that point, I decided to check the master drone, clinging to the faint hope that Shia might have already returned.

“…Shia? You’re on the 81st floor? Wait, you already defeated the boss on the 80th floor? You terrifying girl.”

At this moment, a fleeting thought crossed my mind—”There’s no way I can reach the 80th floor. Shia must get bored of dungeon diving at some point and return, so maybe I can just wait for her on the surface.”

But my little sister had pleaded with me. “Don’t leave Shia alone.”

That meant I had no choice but to push forward.

“If I have to break my limits, then it has to be here and now.”

Even if everything beyond the 70th floor was unknown territory, an insurmountable wall standing in my way—I had to go forward for the sake of the Kuma family’s peace.

“That being said… There’s still a limit to how far I can push myself, right?”

I had just reached the 50th-floor boss room at my fastest time ever.

Meanwhile, Shia had already reached the 100th floor.

The 100th floor.

It may not be the final floor yet, meaning it wasn’t considered a full dungeon conquest, but just a few days ago, the 100th floor was humanity’s ultimate goal—the highest peak, the dream of all explorers.

Yet, a runaway girl had casually strolled in and reached that very floor on her first serious attempt.

“This isn’t fair. Even I, known for abandoning my humanity, can’t handle the 100th floor!”

Still. Still…!

“I have no choice but to keep moving forward.”

I pushed open the door to the 50th-floor boss room.

“Hey, Kuma. It’s been a while.”

“…NOOOO!! I’M GOING HOME! I’M GOING HOME WITH ZARAMOS!!”

Standing before me was none other than Berglims, the named boss of the 150th floor, and the final boss of Shibuya Dungeon.

And I had just met him yesterday.

“…I thought I heard Kuma’s voice just now? No, that can’t be.”

I glanced around, but of course, Kuma was nowhere to be seen.

His mana capacity is unmatched, but with his current level of mana control and skills, there’s no way he could have made it this far.

“100th floor…”

Before I knew it, I was standing before the door to the 100th-floor boss room.

This was my first solo dungeon run since the dungeon was fully cleared.

Compared to before the complete conquest, my mana had increased significantly. The power of my Mana Form: Valkyrie, the War Goddess, as well as my physical abilities, had improved drastically.

That’s why I had reached this point with little difficulty.

“…No name.”

There was no name engraved on the door.

Just like the nameless boss of the 100th floor in Omiya Dungeon.

“Let’s see who awaits me.”

I hadn’t planned on seriously clearing the dungeon this time.

I just wanted to push myself until I reached my breaking point.

But despite my half-hearted intentions, I found myself reaching for the door handle.

The dimly lit room gradually illuminated.

At its center stood a colossal mountain of rock.

With a deep rumble, the mountain began to move.

“…Another dragon.”

The sight brought back memories of the beautiful dragon I fought in Omiya.

Its emerald-green scales were as hard as gemstones.

Its wings cut through the sky with elegance.

And the breath of mana it unleashed had damaged my Mana Form and Mana Skin more than anything I had ever faced before.

But compared to that dragon, this earth dragon was…

“Rugged.”

If I had to sum it up in one word, that was it.

As a creature, it was heavy, massive, and overwhelmingly powerful—a true embodiment of size equals strength.

It had no wings, as if it had never intended to fly.

Its rock-infused scales seemed several times tougher than the dragon in Omiya.

“…Give me punishment and trials to overcome.”

I pointed my silver-glistening longsword at the enormous earth dragon.

Our gazes met—my eyes against its golden pupils.

“GWAAAAA!!”

The earth dragon’s roar shook the air.

Even with my Mana Skin protecting my eardrums and semicircular canals, my brain was rattled. I shook my head twice, then three times, trying to stay conscious as I sprinted forward.

“First, a single slash.”

I leaped toward its neck and swung my sword.

A horrible screeching noise rang out as the blade scraped against its rock-like scales, sliding off without leaving a mark.

“It’s hard.”

“GWAAAAA!!”

The earth dragon swung its massive claws, as if swatting away a mere insect.

“Absolute Defense—Aegis Shield!”

I conjured a massive kite shield with magic and braced for impact. The force sent me flying, but I managed to deflect the blow.

—However, the shield was shredded apart and vanished into mist.

“Even the Holy Silver Sword, Eryndal, won’t work.”

The shimmering silver longsword had already chipped from the earlier friction, making it useless. I dispersed the Holy Silver Sword, returning it to pure mana.

Both my shield and sword needed at least five minutes to regenerate.

“Now then… what should I—oh, no.”

The ground shook violently as the earth dragon charged, so fast that it felt like an earthquake.

With the ground trembling beneath me, I struggled to maintain my footing. At the last second, I kicked off and shot straight up, narrowly dodging its charge.

“GWAAAAA!!”

The dragon lifted its head skyward, its massive jaws opening wide.

In an instant, its mana surged, gathering at its core—and then, a torrential wave of destruction was unleashed.

“Tch…!”

Unlike the laser-like breath of the dragon from Omiya, this breath attack covered a vast area.

The moment I realized I couldn’t dodge it, I poured all my mana into defense, bracing myself.

One second.

Two seconds.

Three seconds—

The dragon’s breath kept coming, hellbent on incinerating me completely.

“AAAAAARRRGHHHHH!!”

Its mana output was insane.

I had underestimated it, thinking it would be similar to the Omiya dragon. But this was on a completely different level.

If I lost focus for even a moment, I’d be vaporized.

“Fuuu… syuu….”

Finally, the breath attack ended.

It was the longest moment of my life.

The very second I was released from its grip, my entire mana reserve was depleted.

I lost my buoyancy and began plummeting toward the ground.

“…Gah!”

I couldn’t even maintain my Mana Skin.

The only thing left were remnants of my Mana Form armor, scattered across my body.

A mere dozen meters of freefall should have been nothing, yet it ruptured my organs and left me coughing up bl00d.

I could feel multiple fractures across my body.

“…This is bad. I… need to run.”

If the earth dragon’s next attack even grazed me, my entire body would be obliterated.

No—just its roar alone might be enough.

“Return… portal…”

I couldn’t breathe.

My consciousness wavered, but through the pain, I forced my right arm to move, desperately searching for my necklace.

“……”

It wasn’t there.

I patted around my neck with trembling fingers, but I couldn’t feel the chain.

“…I see. So this is the end.”

Kuma, Ayane… I’m sorry.

Papa, Mama… I’m sorry.

I had rushed in unprepared, overestimating my own strength.

I had arrogantly sought trials and punishment, and now, I was paying the price.

Realizing the end was near, a single tear slid down my cheek.

The only regret I had left… was that I never made up with Ayane.

I closed my eyes and waited for the inevitable.

For the final moment to come.