The Hidden Dungeon Only I Can Enter

Hidden Dungeons.

That’s what places like the one I’m standing in right now are called. An unexplored dungeon that the world is still unaware of, or just one with an as of yet unknown method of entry.

There’s always some kind of obstacle that prevents people from getting inside.

An entrance that doesn’t open.

No stairs to descend.

Protection by an overwhelmingly strong magical creature.

No knowledge on how to enter in the first place, and so on.

Precisely because of that the one to discover a way to enter is certain to be praised a hero. And that’s an understatement!

One time a certain Janton Jastal accidentally stumbled upon a stone that was required to enter a dungeon and just like that his country rewarded him with enough money to live multiple life times of bliss. That’s how big of a deal

Hidden Dungeons are.

And well, for better or worse that’s the kind of uncharted place I’ve stepped into.

“It’s still the third floor, what’s with this kind of monster popping up!”

Facing a skeleton looking like death incarnate I couldn’t help but yell. Just from the air it gave off I could tell it’s an extremely dangerous enemy. With ripped cloth fluttering along with its movements it raised its scythe and made me its target. At this point all I can do is take up the fight.

Hurriedly I made use of 「Analyse」, one of the skills I acquired on the previous floor, and verified my opponents strength.

…Turns out I encountered an enemy much worse than expected.

Name: Dead Reaper

Level: 99

Skills: Reap of Instant Death

For a level 23 like me it was already a ridiculously strong enemy on its own, but that skill is beyond brutal. A summary of the skill turned out as follows.

「Reap of Instant Death」

“From today on we’ll both be librarians~! Let’s work hard together, wahahaha~!”

While she was playing around mimicking some great hero I told her about the recent developments.

“…huh? So what? Wait, wait wait, so you can’t become a librarian?”

“Looks pretty impossible. I’ll be cheering you on from the back row though, Emma.”

Thanks to their baron lineage her family enjoyed a rather wealthy life and since both our parents are friends our childhood was full of opportunities to meet. Our noble ranks were different, but she’s never been the kind of person to boast about things like that. Our workplace… was supposed to be the same.

“So hey, what’s up with you being more down about it than I myself?”

“But, buut… I even found a story I was sure you’d be interested in, but to end up hearing something that depressing…”

“Something I’d be interested in?”

“It’s about your skill. Yesterday while reading in the archives I found something that stayed on my mind.”

“Oh, something about the Great Sage then? Do tell.”

「Great Sage」

A skill so rare that I’m currently the only possessor.

When I was seven years old and had it identified at the church my parents jumped from joy. Reason being that it’s the same skill a certain famous sage gained, who as a result acquired a lot of knowledge of the world and its

underlying laws. A skill with effects still unclear to the scholars, I was told. But in my case it’s a wasted gift.

――I can’t use it.

Well to be exact I can use it, but after utilizing it I’m assaulted by a headache so terrible it makes me wish for death, a cluster headache.

Until now I’ve refused to endure that kind of pain just so I could ask the Great Sage a question.

“There was this one line, that whenever Merlin the sage had a headache he would have his wives gather so he could kiss them.”

“Must’ve been crazy about kisses.”

“There, exactly! Merlin also had headaches when he used the skill. What if kissing the opposite sex was what alleviated the pain?”

“…It’s possible, I guess.”

“Right? W-wanna try it?”

“Me and, you?”

“Well, no one else to ask, right? I mean, I’m your childhood friend so something like a kiss is really just… in other countries they’re shared as greeting, you know? Despite appearances we’re adults after all.”

Watching Emma answer while being flustered like that I unintentionally let out a laugh. Because of how kind she is she’s fine with helping for my sake.

“Alright, let’s do it right away.”

“Wait, what, right now? What about the mood, the moods totally missing!”

“As compared to where?”

“The clock tower, let’s go~”

I’m not really following, but like that we climbed the clock tower in the very center of the city.

“Appreciated”

“Y-you’re welcome”

Her lips were warm, as well as soft, but rather than that I couldn’t help but worry about the skill’s side effect.

“Good luck!”

While fear was welling up inside of me Emma gave me a push on the back. My courage built up again.

Great Sage, please answer my call.

「Your will.」

I need to become stronger so I can pass the hero school entrance exam. What would be the most efficient method?

「Answer. Entering a Hidden Dungeon would be optimal.」

…It’s…It’s not coming?

Until now this has been the point at which the pain would start, but I’m still good!

Unintentionally I voiced my thoughts.

“Where is the closest Hidden Dungeon?”

「Please enter the grotto 14645 meters south west. Go on for 100 meters. Push the rotating wall on the left to reveal the stairs to 『The Unending Dungeon』」

“Ah no way now it’s starting to hurt like my eyes are being gauged out!”

“Noir! Should I kiss you again!?”

“Please do, Emma!”

We kissed. Several times. As if I was just imagining it the pain disappeared. Unbelievable. To think the method was this effective. But the pain is still dreadful, so after just asking about the entering method I canceled the skill.

“Se… seven times….”

On our way home I expressed my thanks to Emma, whose head turned red like an apple.

“Thanks for today. Would it be alright to ask you again some time?

“U-… Uh, yeah, no other choice, right”

Bidding farewell to the fidgeting girl on my side I returned home as fast as I could.

Father was still prostrating.

“These are my feelings, Noir! This is my devotion!”

“――…More importantly. Father! I need a sword with a good blade right away!”

“Don’t cut me―!! You can call me old man just please don’t kill me!”

“Don’t be an idiot, like I’d kill you! I’ll be out for a while training for the hero school entrance exam.”

“Aa, oh, so that’s why.”

Right away I received a sword with an exceptional blade. Looks like father used to be an adventurer back in the day. The kind that doesn’t get paid.

I equipped the sword and stormed out of the city at once.

When the sun was right above me I arrived at my destination and entered the remote grotto. After advancing into it a little I pushed the wall and truly, it rotated with a *gurun.*

Behind the wall there was a small room, in the middle of it a small staircase leading downwards. Long live the Great Sage.

Let’s descend.

“Whoah, it was really here.”

The area grew more vast and ahead of me towered a massive iron gate. No matter what kind of magic attack one summoned, it didn’t seem like it’d budge in the least. I recited the required incantation.

“「The Hidden Dungeon only I can enter. Secretly becoming world strongest!」”

Menacing rumbling…―――――

Huh, it actually opened with that silly line. No way anyone could enter without being taught that phrase.

――The Hidden Dungeon only I can enter.

With an air of triumph I passed through the gate.