Epic of Caterpillar Chapter 4: Evolution, Servant and The River Emperor!

Novel: Epic of Caterpillar Author: PancakesWitch Updated: May 20, 2026

Font Size

15px

4 Evolution, Servant and The River Emperor!

| DAY 7 |

"Hmm what.. that was a weird dream.. eh?"

| CONGRATULATIONS! YOU HAVE SUCCESSFULLY EVOLVED INTO: UNDINE BUTTERFLY |

| YOUR LEVEL HAS BEEN RESETED TO LEVEL 1/20 |

| YOU ARE ABLE TO UTILIZE TITTLES NOW |

| YOU ARE ABLE TO LEVEL UP CERTAIN SKILLS NOW |

| YOU CAN NOW USE MP AND MAGIC |

| YOU OBTAINED TITTLE: LOVED BY THE WATER SPIRITS |

| YOU OBTAINED TITTLE: RIVER QUEEN |

| YOU LEARNED SKILL: BASIC WATER MAGIC LEVEL 1 |

| YOU LEARNED SKILL: BASIC WATER MANIPULATION LEVEL 1 |

| YOU LEARNED SKILL: MANA USAGE |

| YOU LEARNED SKILL: BASIC MAGIC WATER SHIELD LEVEL 1 |

| YOU LEARNED SKILL: SUMMON LOWER WATER BEING LEVEL 1 |

"Th-th-this..! Uuaaaaaaaaa!!! I really evolved! Amazing! Amazing! Look at ! Im such a beautiful butterfly now! such beautiful blue colored wings, and my 6 little limbs! haha- Wa-wait! why im so happy?! Im a man! Why do I look so fenine?! And RIVER QUEEN?! What do you an! Dont change my sex out of nowhere Mysterius Voice! Hey!"

| SYTEM MASTER: ######## HAS GRANTED YOU A NA |

| YOUR NA IS: KIREINA |

"He-hey.. wait a second.. Kireina?! isnt that.. beautiful in japanese?! Are you toying with you bastard Mysterius Voice?! Is this all just a ga for you?!"

| THANKS TO YOUR NEW NA YOU ARE ABLE TO DO MULTIPLE THINGS |

| YOU CAN GAIN DOUBLE THE NORMAL EXP |

| YOU WILL BE ABLE TO CHOOSE MORE OPTIONS IN THE EVOLUTION NU |

| YOUR SKILLS WILL LEVEL UP FASTER |

| AFTER A CERTAIN REQUIRENT IS ACOMPLISHED YOU WILL BE ABLE TO CHOOSE A CLASS |

| YOU CAN GRANT YOUR MINIONS A NA FOR SIMILAR BENEFITS |

" Siiighh.. so much info in my head, I feel like I might explode.. uugh I need to swallow all this slowly, or I am going to freak out even more."

"For now lets see.. STATUS!"

| NA: KIREINA CLASS: NONE RACE: UNDINE BUTTERFLY

| LEVELS: 1/20 EXP 078/400 STATUS: FULL

| HP: 35/35 MP: 50/50 STAMINA: 154/120 |

| STRENGTH: 21

| DEFENCE: 23

| MAGIC: 32

| RESISTANCE: 28

| SPEED: 31

| CHARISMA: 15

| LUCK: -2

| SKILLS |

| RIVER KING STRONG BODY LEVEL 1 | | RIVER KING STRONG CLAWS LEVEL 1 |

| SUMMON LOWER WATER BEING LEVEL 1 |

| TITTLES |

"Guuuaaack! A-A-AMAZING! All my stats increased! How can a butterfly have more Strength than a caterpilar to begin with? Anyways I can even use magic now and my Charisma beca a positive value! But my Luck its still -2?! Does that an that negative things will still happen to anyways? N-no way..."

I flapped around and started to eat so of the fish from yesterday.

"Hahaha this is a ncie al to celebrate my evolution! Now now.. my older skills started to show they actual levels, so I was right after all, my WEAK BITE is at level 10? its because I used it too much I guess, and WEAK THREAD MANIPULATION is level 7! expected from a thread expert like ! I wonder if skills are able to evolve to stronger versions of themselves? Like WEAK THREAD MANIPULATION to sothing like STRONG THREAD MANIPULATION! but its still not maxed yet.

Wait, my WEAK BITE is at max and it havent evolved! so la! Sigh"

| SYSTEM MASTER: ######## HAS APROVED YOUR SUGGESTION |

| NOW YOU CAN EVOLVE SKILLS AT MAX LEVEL |

| WEAK BITE HAS EVOLVED TO > STRONG BITE |

| STRONG BITE: Use your strong jaws to bite the target. COST: 1 Stamina |

"WHAT?! System Master?? Is this Myterius Voice right? Why would he do that? Whats his purpose on helping out? Sigh, I bet hes ploting sothing to make suffer even more! You bastard! ... But thanks I guess, Hahaha!"

...

"He-hey say sothing! are you trying to make look like a crazy person now?! Talking to myself like I always.. do, Uggghh! Anyways! Ti to test out my new power, lets head to the West River!"

While I was flying to the West River I noticed how easy I was able to fly with my little butterfly wings.

"I feel like I was born with these wings from beggining, its so easy to fly and I barely use Stamina, its very convenient!"

Flap Flap

While flying I started to wonder why did I beca a Undine Butterfly.

"What was the exact reason of evolving into this type of butterfly in specific? I barely rember sothing about different evolution choices. I think the other ones were Gigant Caterpillar and Lower Fairy... Now that I think about it this butterfly is probably the best choice, A Gigant Caterpillar would had been too much trouble and I would beco a big bait waiting to be devoured, while Lower Fairy seems fine I could be hunted by humans perhaps. A silent butterfly was really the better choice at the end. But why did I even got this choice to begin with?

Was it because I ate too many fish and got Water Affinity Skills? It seems to be the most logical answer at this point.. So evolution choices depends on the skills I have obtained? Oh! Im already here."

I flew close to the River and started activating my skills, BASIC WATER MAGIC and BASIC WATER MANIPULATION seem to work well combined, I can completely control almost the entire mass of water that makes the River. Both skills cost 5 MP and 5 Stamina when being used together. Thanks to my two WATER AFFINITY skills my control over water doubles in power.

MANA USAGE seems to be a passive skill that lets use Mana more swiftly and lowers the MP consumption of any type of Magic permanently.

BASIC MAGIC WATER SHIELD seems to be a active buff that I can let indifinetly over my body, it pretty much works as a second HP bar, taking damage for until it breaks out, I can also choose to let it absorb my MP to regenerate itself automatically.

"This one seems aweso! My HP is pretty much doubled with it, but its sucks so much MP if I let it to auto regenerate, so I guess its a fair skill in that sense haha.. Now to the most interesting one.."

SUMMON LOWER WATER BEING as the na suggest, lets summon one water being, they look like little slis made of water, after so testing they seem to be able to level up on they own and can be alive as long as they have enough water.

Each summon cost 20 MP, but being able to finally have so minions is worth it. This ti I only summoned one Water Being, I nad it Rimuru!

" Rimuru, show your stats!"

"Guuruuu!"

| NA: RIMURU CLASS: NONE RACE: LOWER WATER BEING

| LEVELS: 1/10 EXP 000/100 STATUS: FULL

| HP: 25/25 MP: 30/30 STAMINA: 100/100

| STRENGTH: 19

| DEFENCE: 18

| MAGIC: 24

| RESISTANCE: 18

| SPEED: 23

| CHARISMA: 2

| LUCK: 0

| SKILLS |

| BASIC WATER REGENERATION LEVEL 1 | | SERVANT AFFINITY |

| WATER AFFINITY |

| TITTLES |

| NAD SERVANT |

"Guuuaak! You-you are better than when I was a Caterpillar! You could had easily killed !

Buahaha but you're my loyal servant now! Fell honored Rimuru, you are the first servant of who will beco the strongest!"

"Guuurururu!"

"Uuaaahh you're so cute! ... Ne-nevermind, lets go train, Rimuru!"

"Guururu!"

While I left rimuru to train catching walking fishes I started to look up at the Tittles effects.

"Hmm lets see.."

| FIRST KILL IN THE NEW WORLD: Congratulations for surviving a life and death situation! 1 to Strength, Defence and Speed |

| TRASH EATER: A tittle given to those who like eating trash. Max Stamina 10 |

| RCILESS AQUATIC KILLER: You are rciless fish killer! Dont you feel ashad of your cheap tactics? 5 extra damage to Aquatic Beings |

| KING OF THE RIVER: You killed the River King and now you are the new one! Congratulations! 2 to Strength, Defence and Speed |

| LOVED BY THE WATER SPIRITS: You have been blessed by the Water Spirits. 10 Affinity to any water related skill |

| RIVER QUEEN: You are the new and beautiful Queen of the River, congratulations my Queen!

10 to any water related skill and grants total domination over Rivers.|

"Hmmm haha.. very funny Mysterius Voice.. very funny.. lets see Rimuru's one."

| NAD SERVANT: You have been nad by a strong being! Congratulations Rimuru! Your EXP gains doubles. You can easily level up skills. Master affinity 10 |

"Wait, so naming any minion will grant them all these benefits? Thats unfair.. Well anyways, ti to check out on Rimuru's hunt.."

Just before was Rimuru over a pile of more than 10 walking fishes!

Rimuru showed a proud expression, almost asking to be patted by his loved master.

"Hahaha you really are a monster Rimuru! well done! here here"

Pat Pat

"Guuu!!"

| DO YOU WANT TO MAKE A PARTY WITH: SERVANT RIMURU? |

"What? Party? what does it do?"

| MAKING A PARTY WITH A SERVANT LETS YOU TWO SHARE EXP GAINED, YOU CAN ALSO KNOW THE LOCATION OF YOUR PARTY MBERS AND YOU WILL BE ABLE TO USE COMMAND RELATED SKILLS IF YOU ARE THE DESIGNED PARTY LEADER |

"Oohohoho! hohohoho! so thats it! Allright then Rimuru! Lets beco a Party! Select YES "

| YOU HAVE SUCCESSFULLY CREATED A PARTY WITH: SERVANT RIMURU |

| YOU GAINED 345 EXP FROM WHAT RIMURU GAINED | | YOU GAINED A LEVEL! |

| LEVEL 2/20 EXP 23/450 |

"I never expected that it would be so easy to level up now! Allright Rimuru! Keep hunting on walking fishes! Wait.. wouldnt it be too easy now? Should I be worried? I have minus two Luck stat after all, nothing can be so easy.. Wa-wait Rimuru, co here!"

"Guruu?"

Splash!

"GLUUOOOOPPP!!!"

Out of nowhere a massive River King ca out of the water attacking Rimuru!

"Guuuuuaaaahhh! I knew it! Rimuru! Get back! Let handle it!"

"Guuuurururu!"

Rimuru swiftly retreated behind .

"Allright you bastard! I dont fear the likes of you anymore! Activate skill! BASIC WATER MAGIC and WATER SHOT! Combine! MAGIC WATER SHOT!"

Flaaash!

Boom!

"GLUUUEEEE!"

The Magic Water Shot flew as fast as the wind itself! and hit the River King right in the middle of his forehead!

"Headshot! Nice! Thats what you get for trying to eat my servant! Are you okay Rimuru?"

"Guuuu!"

Rimuru got closer to and started to hug in my lower abdon.

"Haha! He-hey! stop that, dont be so consented you little blob! hahaha!"

| YOU GAINED 523 EXP | | PARTY MBER: SERVANT RIMURU GOT 261 EXP! |

| YOU GAINED ONE LEVEL! | | LEVEL 3/20 EXP 96/500 |

| PARTY MBER: SERVANT RIMURU GAINED ONE LEVEL! | | LEVEL 6/10 EXP 12/300 |

Just before I could even check out Rimuru's stats two River Kings showed up out of the blue!

Splash Splash!

"What? Whats wrong with these bastards? They all want to die and rebel against the River King! (Or Queen) hahaha! Useless! MAGIC WATER SHOT! MAGIC WATER SHOT! "

Flash! Flash!

Boom! Boom!

"GLUEEEEEE!" "GLUOOOOOOOHH!!"

Bam!

The two River King bodies fell to the ground, motionless.

"Haha! Nice Shot!"

| YOU GAINED 1045 EXP | | PARTY MBER: SERVANT RIMURU GOT 523 EXP! |

| YOU GAINED TWO LEVELS! | | LEVEL 5/20 EXP 91/600 |

| PARTY MBER: SERVANT RIMURU GAINED ONE LEVEL! | | LEVEL 7/10 EXP 235/350 |

After the commotion Another River King ca out, this one was the biggest I've ever seen before!

It was completely covered in bright orange scales, it had two very long whiskers, a strong pair of muscular limbs and a beautiful crest-like fin on his back. It looked fierce and angered!

"Ooohoho? Are you the final boss of this River? The King of Kings! I'll call you River Emperor! Allright! Bring it on!"

As if enraged by my provocation the River Emperor activated his active buffs and boosted his stats to the sky! A incredible pressure started to affect , as I looked down the River Emperor body almost doubled in size and his entire body was covered in muscles and veins!

"GLUUUOOOOOOOOOOOOOOO!!!"

Flash

In just a second the River Emperor dissapeared of my sight!

"Wh-what?! where did it go? how can it be so fast?!"

BAAM!

Just a second after I felt a strong force hiting from my back! It was the River Emperor with a sneak attack, it sent flying directly to a old tree. After crashing the strong force made the tree split in half!

Crash!

"GUUUAAAKKKH!"

The strong crash made spit a dark green colored blood!

"Th-this is bad.. this guy is completely in another league! If it wasnt for my WATER MAGIC ARMOR I would be a goner! Rimuru! Distract him while I cast a strong Water spell!"

"Guuu!"

Just after my command, Rimuru started to consu big amounts of Stamina and his speed increased by almost twice!

Flash!

"GLUUOOO?!!"

Flash Flash Flash

Rimuru started to distract the River Emperor at full speed, creating after images of himself and confusing the gigantic walking fish. The River Emperor wasnt able to even scratch him at full speed!

Baam!

"GUAAAAK!"

Rimuru started to fire water bullets from all directions!

"GUUUUUUU!"

Pew pew pew!

Shots of blood started to sprout out of the River Emperor's body while it yelled in pain.

"GLUUUUAAAAKKK!!"

"Well done! Hang in there for a little longer Rimuru! Im almost... ready...!"

A big concentration of water started to acumulate over my head, it was costing almost all my MP and Stamina but I was sure that this one single attack would one shot the River Emperor!

"Rimuru! I'll also give it my all! BASIC WATER ELENT MAGIC, BASIC WATER MANIPULATION, WATER SHOT combine! I'll call it.. Water.. Spear.. Yes! WATER SPEAR!!!"

Fluoooosh!

As if cutting the air itself a gigantic Water Spear was shot from over my head, it had the power of atleast 50 water bullets combined and it cost all my MP and Stamina, If I didnt kill the River Emperor right now I would be completely dead!

Crash! BOOOM!

"GUUUUEEEEKKK!!!"

Right through his head, the Water Spear completely riped the River Emperor in half!

The Water Spear was so strong that it keept destroying the trees ahead of for atleast 50 ters.

| YOU GAINED 2069 EXP | | PARTY MBER: SERVANT RIMURU GAINED 1035 EXP |

| YOU GAINED 3 LEVELS!| | LEVEL 8/20 EXP 156/750 |

| PARTY MBER: SERVANT RIMURU GAINED 2 LEVELS! | | LEVEL 9/10 EXP 70/500 |

| CERTAIN REQUIRENTS HAVE BEEN ACOMPLISHED | | NEW SKILL LEARNED: WATER SPEAR |

"Haaaah... ahahaha! We did it Rimuru! Leveling up may heal my hp and mp but Stamina doesnt get recovered, Im so tired... Haaah... Rimuru..? Wh-where are you?! Rimuru!"

No matter how much I called Rimuru wouldnt respond as if he was completely gone. Even more, for so reason everything stayed still and I couldnt hear anything or feel anything.

"Whats going on? its like ti stoped? Eh?"

Ahead of , a humanoid figure made of light stared at .

"So you have co this far" it said.

"Who are you...? Th-that voice... You are that bastard! Mysterius Voice! "

"Haha, Im glad you can recognize this voice, but its no more than a simulation, I dont really have a voice at all, this is all in your mind. Anyways, do you like the na I give you?"

"Of course I dont you bastard! What do you think I am?!"

"Its just that such beautiful wings captivated , hahaha, Kireina was a fitting na for a otaku like you after all!"

"Yo-you bastard! Its all your fault! That I died and that I reincarnated into a stupid bug!"

"No... not really, you died from a very bad fever caused by a common virus in your original world, it was completely your fault haha! Anyways, I already got bored over picking on you, just get stronger and enjoy this world, its waaay bigger than you imagine, when you get stronger I'll talk to you again about so important bussiness, Bye bye"

"He-hey! Are you really leaving just like that?! Hey! Wait you bastard!"

Flash

"Guuuuuruuu!"

And just like that ti started flowing normally and I found rimuru over my body licking .

"Ah... That bastard.. what does he really want? What does he an by bussiness?"

"Guuu?"

"Ah! Rimuru! Im fine, haha. Anyways lets head to the nest! I'll show it to you!"

"Guuuuruuu!"

With Rimuru's help I wraped the River Emperor body with my threads and we headed back to my nest, Rimuru was surprised on how everything looked in the nest and I made him a little bed to rest, it seems that he doesnt really need water that much.

Well, if he ever felt like drying out I can always spray him with so water made with my Magic.

I spent the rest of the day eating the delicius at of the River Emperor, it tasted like a very high quality raw salmon fish from my world, I was in heaven everything I munched it.

I wanted to see if Rimuru could eat sothing more than water so I choped a big piece of at and offered it to him.

"Guuuuru?"

"Here, you can eat it"

"Guuuu!"

Rimuru obediently started to absorb the at, It got over it until the at was completely inside his body and then it dissolved slowly inside of him.

"I see.. so thats how you eat huh, very typicall of slis! So, how did it taste?"

"Guguguguuuu!"

"Haha you liked it? Good boy! Here have another piece, Its too much for to eat in one day anyways."

Rimuru started to absorb the at until it was completely dissolved.

| PARTY MBER: SERVANT RIMURU LEARNED A NEW SKILL: RIVER EMPEROR IRON BODY |

| PARTY MBER: SERVANT RIMURU LEARNED A NEW SKILL: HIGH WATER AFFINITY |

"Oooh I see, so you can learn skills from eating other living beings huh? Maybe its a shared skill that only my servants can get. But wait! why I still cant get those skills? Should I eat more? So he needs such a little quantity to learn them! Thats pretty cheat Rimuru! Im not giving you any more at!"

"Guuuuuu!"

After eating almost halF of the massive River Emperor body I finally got new skills.

| NEW TITTLE OBTAINED: RIVER EMPEROR |

| NEW SKILL LEARNED: RIVER EMPEROR IRON BODY |

| NEW SKILL LEARNED: RIVER EMPEROR INCREDIBLE ENDURANCE |

| NEW SKILL LEARNED: RIVER EMPEROR PRESSURE |

| NEW SKILL LEARNED: CONTROL MINIONS |

| NEW SKILL LEARNED: VERY HIGH WATER AFFINITY |

"Guuuaahahaha! so these skills are what that bastard was using this whole ti! I can see why he had such a sturdy body that could take so many water bullets from rimuru like nothing! Now theyre all mine! Thanks for the al River Emperor!"

I started to browse on the skills and one in particular took my attention.

"CONTROL MINIONS...? lets see..."

| CONTROL MINIONS: Needs to act in combination with RIVER EMPEROR PRESSURE to successfully make weaker beings your minions, after making a weaker being your minion, you can give it orders and add him to your party |

"I see! so its pretty much enslavent! hahaha! So thats why the other River Kings were attacking us recklessly, it was all that bastard command! I see I see! Very well, tomorrow we go to hunt so slaves Rimuru! Now lets check out our status before sleep, STATUS!"

| NA: KIREINA CLASS: NONE RACE: UNDINE BUTTERFLY

| LEVEL 8/20 EXP 156/750 STATUS: FULL

| HP: 43/43 MP: 66/66 STAMINA: 187/120 ( 10)

| STRENGTH: 29 ( 3)

| DEFENCE: 31 ( 3)

| MAGIC: 40

| RESISTANCE: 36

| SPEED: 39 ( 3)

| CHARISMA: 19

| LUCK: -2

| SKILLS |

| RIVER KING STRONG BODY LEVEL 1 | | RIVER KING STRONG CLAWS LEVEL 1 |

| SUMMON LOWER WATER BEING LEVEL 2 | | WATER SPEAR LEVEL 1 |

| RIVER EMPEROR IRON BODY LEVEL 1| | RIVER EMPEROR INCREDIBLE ENDURANCE LEVEL 1 |

| RIVER EMPEROR PRESSURE LEVEL 1 | | CONTROL MINIONS LEVEL 1 |

| VERY HIGH WATER AFFINITY |

| TITTLES |

"Haha look at those amazing stats Rimuru! this is your master! Amazing! Its completely different than when I was a Caterpillar! Hmm? Lets see what those other River Emperor related skills do..."

| RIVER EMPEROR IRON BODY LEVEL 1: (Active skill) For a set amount of ti increase your Strength, Defence and Speed by 20 Cost: 25 Stamina |

| RIVER EMPEROR INCREDIBLE ENDURANCE LEVEL 1: (Passive Skill) (Permanent) Damage taken from any form of damage reduced by 5% |

| RIVER EMPEROR PRESSURE LEVEL 1: (Active skill) For a set amount of ti show a incredible pressure that make any weaker being tremble in fear! High chance to paralize target, it also increases the chances of making a minion obey you |

| TITTLE: RIVER EMPEROR: A tittle given to those who have defeated the current River Emperor! Water affinity 20, increase the chance of succesfully making a minion by 10% (As long as you own this Tittle, no more River Emperor type monsters can generate in the area: West River)

"Haaah.. so much information, yet I still can sohow process it all, anyways this will help a lot tomorrow when we start slave making haha!"

"Sigh so much happened today, from evolving to making my first new Servant and friend in this world and also fighting the final boss of the River... Yet I sohow want more of this, I really want to figh stronger oponents and get stronger! I want to see how really big this world is... if Mysterius Voice was right then, theres still so much for to see and experience..."

Rimuru ca closer to and started jumping over my abdon.

"Guuguuuguuu!"

"Guaaakk! Wh-what do you want Rimuru?! what? your status? Okay okay I'll see it! Show Rimuru STATUS!"

| NA: RIMURU CLASS: NONE RACE: LOWER WATER BEING

| LEVEL 9/10 EXP 70/500 STATUS: FULL

| HP: 34/34 MP: 39/39 STAMINA: 123/100

| STRENGTH: 28

| DEFENCE: 27

| MAGIC: 33

| RESISTANCE: 27

| SPEED: 32

| CHARISMA: 5

| LUCK: 0

| SKILLS |

| BASIC WATER REGENERATION LEVEL 1 | | SERVANT AFFINITY |

| TITTLES |

| NAD SERVANT |

"Uoooh! Rimuru youre keeping up just fine with ! You're amazing little blob!"

"Guuuu!"

Rimuru jumped even more over my abdon.

"Guuaak! Hey you know youre actually pretty heavy? Dont do that! Now go to your bed, its ti to sleep! Good Night Rimuru..."

"Guu!"

Rimuru obediently went to his little bed and closed his eyes.

You are reading Epic of Caterpillar Chapter 4: Evolution, Servant and The River Emperor! on novel69. Use the chapter navigation above or below to continue reading the latest translated chapters.

You may also like

Reviews