In case you have skipped the prologue then I recommend you to read it too as the real story starts from the start 😉

Veldora my mind: hmm a human kid in this cave and a very intelligent slime but on the top of that both are reincarnated , just what type of shit are gods thinking?

Slime: wanna listen my story?
Kid:yep
Slime:well about that (time goes a little back where he was just a salaryman and working in in a garbage company and his junior showed his gf , she may get died if he doesn't save him at the cost of his own life , death by thief's knife .
His last words to his junior "... Burn it"

Slime in his mind:"ahh I hope he broke my PC"

Veldora:"that was also interesting but both of you do you know there are monsters nearby ?"

Slime:"is that so? Are they strong?"

Veldora:"since you are a slime you may get some problem fighting them, don't you got any skill or ability ?"

Slime:" ... Talking about skills ..."
In his mind: "there is a voice calling herself great sage , i guess that's my skill."

Kid:" hey I don't have any ability, but yeah I can sense magic here."

Veldora: "it's magiculus but by the way do you know how you got here? A human baby in a cave?

Kid:" i guess I'm thrown away."

Slime:"that can be chance , hey Veldora kun should we go out there?"

Veldora:"hmm? Do you two have names?"

Both:"nope."

Veldora:"ok then let's give you some"

(Meanwhile kid was scratching out some slime from slime's body)
Slime: ouch what are you doing?(Notice: you didn't got hurt or sensed pain due to pain nullification)

Kid:" I was just wondering if you regenerate ."
(He reshaped)(The colour of slime in kid's hand changed to dark purple)
Everyone:" huh??"

Veldora:" I guess you have some powers it's a fact of age that it's not complete yet. May be naming would help you. Choose a surname.We will be siblings!"

Slime:" hmm... something good something cool .... Veldora kun is like a ...Storm .... Tempest!
Veldora:"Tempest! Wohoo! Good from now I'm Veldora Tempest! and you uh... Hah! Rimuru Tempest! And you ... Uhh....(kid covered him with slime sheet) Shadow? Oh! You Shadow Tempest!"

Kid's mind:"does this dragon got some fantasies in his head? I like this guy."

Slime: "Rimuru Tempest good."

Kid:" Shadow Tempest! Cool!(Both got some light around them for a second or two, kid was in awe and Veldora was looking at them)
By the way why are you here ? A big dragon in a cave? "

Veldora:" hmm long story."

Kid:" I got it ! You are isolating yourself from others to become strong right? I will do that too!"

Veldora:" well it's more like a cage to me I'm trapped here in this domain."

Rimuru: "can we any help?"

Veldora:" if you want to free me then you need to destroy this or dismiss it or take me with this ."

Rimuru:" ok then third option, I have this power of taking everything by expanding my any part"

Veldora:"that's.. sus, ok try it"
(When Rimuru is trying to cover the whole domain here Shadow was trying to create different things by slime he can now create)

Shadow:" cool I created my clothes and two crowbars and a sword it's not that sharp yet but I'll make it later, hmm?"

Rimuru:" Gluttony!"

Shadow's mind:" beside nuclear missile there's another thing that can make you disappear from the world, this power , I must train myself in such a way to prevent me from any type of attack, I must become invincible in this world too. I want a skill to do something like this , I must get it!"
(Notice: Individual Shadow Tempest triggered the skill system,
Unique Skill:Desired Skill:
Atomic Slash.)

Shadow's mind:" this ... this voice , i got it? Was it my long desire? "

Rimuru: "complete! Hey Shadow? "

(Meanwhile Shadow is now creating purple magic in his hand) too weak, why?

Rimuru: "hey you got this skill?"

(Notice: Answer : it's a Extra skill:Magic , concentrated magiculus to create any form of matter) Woah that's amazing power you got there Shadow , so what's your plan?

Shadow: "hmm... I guess I will go with you cause I'm just a baby and can't survive here but I'll come here to train once I became independent "

Rimuru: "then let's go!"

Shadow:"by the way Rimuru, want a challenge?"

Rimuru:"huh? What do you mean by that?"

Shadow:"we are going to start our life from zero here , but we got skill instantly, let's challenge each other to becoming stronger! And fight when we get time for that!"

Rimuru:"(smiled in his own way)ok I agree!"

( After that both goes forward fighting monsters in that big cave though shadow can't help much cause he can't move fast and then they finally got out of the cave , then some goblins found them trembling in fear thinking like who are these strong two people and one of them is just new born not really but still a baby? And other one is the weakest species slime?
Well after that Rimuru done his job , named everyone and founded a village a good one by his hard work in jungle and dwarf kingdom and side by side Shadow was growing fastly due to the environment of monsters and got some skill)

Name:Shadow Tempest
Class:High-Human
Age:3
Skills:
Unique Skill:
Atomic Slash
Slime body
Extra Skill:
Magic

(Though he didn't used them but got them at intermediate level but still at the age of 1 he can do all activities a human can at pre teenage [8-9 years] it's amazing to see him to everyone in village that how brilliant he is ,
Timepasses out and Rimuru got a new body of a girl , it was a type of sacrifice by the way , and they even got some new members Onis and other species working for them , well Shuna like to play with Shadow)

Shadow's mind:"hah... Isn't this "Shadow" name a little too much? I guess I should use my previous life name to hid my identity and it would be cool to the Eminence in Shadow!"

Hmm... What name ? I can't use same name it would be weird for my storyline.... Ok then "Cid Kagenou" yeah I will use to fool people

By the way I need to find my parents and also got seclusion(isolation for training) ...

Author: is this enough for chapter 1?
I guess so well I have whole storyline in my head so don't worry about anything and sorry I don't know the full skill system of Tensura