Author note: I am run out of ideas when continuing Isekai quartet fanfic. I decided to write a fanfic about Rimuru's one-shot.

...

After several hundred years in Tempest, Rimuru is now bored after looking after the city. Rimuru is in a boring state which worries his servant. Ciel decided to suggest him.

<Master! I think we should travel to different worlds on our own. I found a place we can travel with.> -Ciel

"Oh! Then I will accept it. After many years, deal with humans, war, and otherworld invaders. I would like to spend my time with peaceful life." - Rimuru

Ciel is happy when her master is happy.

So, Rimuru begins to travel to a different world, leaving a letter to everyone in Tempest.

...

...

...

Rimuru found himself next to the tree. He asked Ciel about this world. Ciel explained she wants Rimuru to spend his time in this world without continue working the paper all the time. Rimuru was happy with Ciel's explanation.

Rimuru walks into the place called Adventurer's Guild as he decided to be Adventurer. The adventurer inside the Guild is having a drinking party and celebrating an adventurer have job as ArchPriest. Rimuru walks to register court to sign. The Guild staff welcome Rimuru and introduce herself as Luna.

"Yes, first is you paid for the assignment." - Luna

Luckily, Ciel create a Currency called Eris in this world. As Rimuru paid, Luna asked him to place his hand on the orb device which make Rimuru very interested in it.

The orb start glowing when Rimuru touched it. It starts lasering Adventurer card. Luna checks the look of it and shocks her

Name: Rimuru

Species: Impossible to Decipher

Stat: Strength - Infinite <Rising>

Health - Not Applicable

Magic Pow - Immeasurable <Rising>

Dexterity - Immeasurable

Intelligence - Extremely high / Nigh-Omniscience

Agility - Infinite

Luck - Always follow the best result

Skill Point - Impossible to figure out

(What the hell with these attributes?! Does she have 2 measures of intelligence? Is she really a girl? What with the 'Impossible to figure out' refer to?) - Luna

"Who are you?" - Luna

"Please keep it a secret, okay? It caused a lot of problems if you scream about this." - Rimuru

"I see." - Luna

Luna recognized Rimuru's look. Blue hair, insanely magic, and strength, she must be the Goddess of Water Aqua.

Due to Rimuru's incredibly high stats, all of jobs are available.

Archmage with incredible high magic.

Crusader with the most powerful defense

Swordmaster with the most powerful attack

ArchPriest with amazing healing magic

Rimuru and Ciel had a conversation about which job should he choose. Ciel suggested asking about a job that combines magical and physical.

Rimuru ask about this job that Ciel suggested.

"Yes, there is one class called Mystic Swordmen. It required all incredible magic, strength, defense, speed, and luck. This is an extremely rare job which almost non-exist and is very difficult to handle magic and sword same time. Would you like to choose this job?" - Luna

"Yes!" - Rimuru

"Well, welcome to Adventurer's Guild, Rimuru-sama, our entire staff will be looking forward to your great deeds." - Luna

"I'm actually a man" - Rimuru

"What! No matter" - Luna

Rimuru like to suggest to anonymous and don't tell anyone about his look which Luna agrees.

...

After the night, Rimuru chooses the hardest mission which no one requested, so his fame spread throughout Axel. There was not an adventurer who didn't say how incredible Rimuru is, but no one had seen him, so they only had to imagine what his appearance would be like. Although some people agree on something, Rimuru must be muscular, incredibly tall, and wear armor. Why? All the mission he has done was brutal and extremely fast.

...

After 2 weeks, Rimuru was passing through a plain outside the village but he saw a boy running away from the toad and a girl laughing like crazy. Rimuru overheard their conversation.

"Aqua! Aqua! Stop laughing and save me!" - ???

"Kazuma! First, add -sama when you address me" - Aqua

"Aqua-sama!" - Kazuma

(I'm going to bury this girl whole, leaving her head on the ground. I'll make her know the horror of being targeted by a toad.) - Kazuma

"There's no other way! Okay! I will save you, Neet! In return, you will have to worship me and join Axis's teach when you go back to the town. Pray for me three times a day! You won't complain if it takes a bite of your meal and more!? Huh?!" - Aqua

Just that moment, she has been eaten by a toad, leaving her in a funny moment and also making her look like an idiot.

"You've been eaten even though you trash-talked for a long time!" - Kazuma

...

Kazuma POV

Before I even swing my sword, a black flash passed in front of me and cut the toad. At first, I was worried about Aqua but it didn't take me long to realize that the toad had been cut into pieces and avoid even touching a single hair of Aqua. In front of it, I was able to see the greatest beauty I have ever seen in my entire life. With white skin, golden eyes, sliver blue hair, and an aura that feel like divinity. If anyone saw her as a goddess, I would agree with this.

...

Rimuru observed their action until a girl get eaten. Rimuru sighed at this girl's lack of awareness and rush at the toad.

He strikes so fast that toad was torn to pieces instantly. He starts to approach a young man.

"Are you okay?" - Rimuru

"Uh... I'm fine!" - Kazuma

Rimuru nodded and he looks back at a blue-haired girl covered with frog's saliva. She is crying about the frog. According to Ciel's report, she is the Goddess of water, Aqua but she is a kind of crying baby.

Suddenly, she grabs Kazuma away from him.

"What are you doing?! Aqua?" - Kazuma

"Kazuma! We must run away from her. I sense her demonic energy inside her." - Aqua

Rimuru is now aware this girl can sense his aura despite he already lows it down.

Aqua channels her holy magic and gives it a punch.

<God Blow> - Aqua

The moment Aqua punches Rimuru, it does nothing.

"Are you done yet?" - Rimuru

"How!? *Chop on the head by Rimuru* A!!" - Aqua

Kazuma decided to stop Aqua before this get out of hand.

"Anyway. I'm not here to fight you, so I'm leaving. Bye!" - Rimuru

Rimuru simply disappeared in a flash.

"What's wrong with you, Aqua? She saves you." - Kazuma

"Kazuma1 I can feel her energy and it was demonic. You couldn't trust her!" - Aqua

"So, you want to be eaten by a frog rather than save by a demon like her right?" - Kazuma

"That isn't the point!" - Aqua

"Well! We must continue our mission and reward our prize." - Kazuma

"OK!" - Aqua

And so they continue with their mission of hunting frogs but as we know they failed.