Kai's Upper Floor Fun Daily Life

―― 6433 years after the start of the game.

Thunderbolts rained incessantly in the Thunderbolt zone.

Even a simple walk in there was enough to instantly lead anyone without

thunder resistance to death.

I finally acquired [Thunder Assimilation] after being exposed to

thunderbolts for so many years. This has allowed me to safely explore the

zone.

Currently, I'm pushing through my way forward since the zone is a literal

wasteland.

Amidst the thunderbolt rain, several thunderbirds that were swooping down

from behind me burst into flames with a slash from my flame sword. They

disappeared into black ashes.

「Uhm, another box again, huh!」

I heaved a deep sigh when I found two metal boxes hidden in the shadow of

a rock.

It seems as if this seemingly luxurious box was intentionally left in this

dungeon. The boxes usually contain various kinds of weapons with special

effects, convenient items, and healing items called potions. Some of these

items are cut above the rest.

I tried to open the metal box with the tip of my flame sword.

『GIGIGIGYAGYAAAA!!』

The metal box suddenly opened on its own, and its giant mouth pounced at

me.

「Troublesome!」

My flame sword bisected that mouth with one slash.

Yes! Sometimes, a metal box's lid could suddenly turn into a giant mouth,

like this. Although you can call it a trap, it's a useless piece of trash since it

doesn't even try to hide its monstrous presence.

Good grief! If it really wants to eat me, it should at least try to hide its

presence and aim for a surprise attack. Only an idiot would fall for such a

blatantly laid trap.

I opened the other treasure box, which apparently was the real treasure box,

while clicking my lips in annoyance at the stupid box I had killed a few

seconds ago. The other box contained a glove.

―――――――――――――――――――――

★Thunder Beast's Glove: Enables its user to control and create a thunder

beast by using mana in the atmosphere.

・Rank: Advanced

―――――――――――――――――――――

A glove that can create a thunder beast, huh! Literally a useless item for a

swordsman like me. Let's just keep this item in my item box.

「This huge zone is finally about to come to an end.」

I've been walking in this zone for the last hundred years, seeing the same

scenery every day. I would've been grateful if I could meet a strong enemy

here. However, this zone was filled with only small fries. Thus, the thought

that I'm about to reach the end of this boring zone brings me sheer delight.

Suddenly, I saw a huge waterfall far away. That seems to be the end.

When I arrived there, I saw a giant column surrounded by waterfalls. I

spotted shadows of numerous giant fishes or reptile-like creatures wriggling

under the column, at the bottom of the waterfall. Hou, how kind of them!

They even prepared a fairly powerful opponent at the bottom of the

waterfall.

Interesting! This arrangement of the enemy is really interesting!

Unable to hold back my excitement, I quickly crossed over the stone

bridge connecting the zone and the giant column. There, I met a giant tiger

clad in thunder, solemnly standing as if it were waiting for my arrival.

Does that mean I have to beat this guy first?

『Upper floor final trial! Defeat the [Thunder Tiger King]! Begin!』

The usual inorganic female voice resounded in my head. Well, let's see

whether this tiger is a worthy opponent or not… But well, I guess I asked

too much. This opponent is a small fry no matter how I look at it. These

fishes or reptiles below this column are far more powerful than this small

fry. It's decided.

The tiger clad in thunder rushed toward me. It tried to sink its sharp fangs

into my neck.

「[Kairyu Kenjutsu; One Sword Style],1st Form―Deadline」

The [Thunder Tiger King] turned into ashes as soon as I said those

words of power. Soon, I walked toward the edge of the giant column to

enjoy the main dishes of this trial.

『Confirming the subjugation of the [Thunder Tiger King]!』

The moment the inorganic female voice resounded in my head to confirm

the subjugation, I jumped down toward the bottom of the waterfall.

『Eh? H-HAAAAAAAAAAH!? W-Wait a minuteeeeeeeee!? Are you

insane!?』

I sensed that I had heard a woman scream during the fall. However, it was

instantly replaced with strong killing intent.

My soul, which sought a deadly battle, was burning. The creature squirming

in the basin under the waterfall had a strength overwhelming that small fry

called [Thunder Tiger King]. I recall that I had brushed against death so

many times during that battle. When I only had one last cup worth of elixir

left in my item box, I finally managed to kill the last monster inside the

basin under the waterfall.

After I drank the last cup of my elixir, I climbed up the giant column.

『Y-You've cleared the last trial of the upper floor. C-Confirming the

subjugation of the [Thunder Tiger King] along with the fulfilment of a

super rare condition. You have acquired special clear privilege.』

A long, narrow metal box appeared at the centre of the column along with

the announcement of the inorganic female voice in my head. Though, she

was stuttering for some reason.

Hou, it seems killing that weak tiger was enough for me to fulfil the special

clear condition. Well, it makes me wonder why I got this for killing such a

small fry.

Upon opening the metal box, I saw a weapon in a form I had never seen

before.

「Is this… a sword?」

It's a sword, maybe. When I tried to swing the weapon, I was really

surprised. It felt like this sword was far more suited for my sword style.

Therefore, I immediately used appraisal on it.

―――――――――――――――――――――

★Raikiri: A nihontou! A sword from another world that is said to be able

to cut the Thunder God or thunder.

・Rank: Legend

―――――――――――――――――――――

So it's a sword from another world, huh! This sword feels comfortable in my

hand. Well, that weak tiger turned out to be pretty useful!

I spoke to myself with a satisfied voice. I returned Raikiri into its sheath

and strapped it on my hips, then resumed the exploration.