Jacob was right now in cerulean cave, you see Arceus managed to locate mewtwo in the cave and he sent Jacob there to find him

Jacob: well here we are, you ready Jaraja

Jaraja: yep

Jacob: okay, let's do this

Timeskip

Jacob was now inside the deepest part of the cave when he saw mewtwo

Mewtwo: male

Jacob: woah

Mewtwo then saw him

Mewtwo: you human, what are you doing here

Jacob: oh um hi, I don't mean any harm

Mewtwo: wait you can hear me

Jacob: yeah

Mewtwo: wait a minute

Mewtwo levitated towards him, he then stared at him

Mewtwo: you sense something in you, something that is only found in pokemon, are you the half human half pokemon being

Jacob: yes

Mewtwo: hmm what do you know, lot's of pokemon talk about you

Jacob: I know, I know a lot about you mewtwo, I know what team rocket did to you

This caught mewtwo's attention

Mewtwo: oh do you, well I'm guessing you probably know I left them

Jacob: yes and I'm guessing you don't like humans much

Mewtwo: yep, your different, your also pokemon, other pokemon talk good things about you so your fine

Jacob: okay, oh by the way, I kicked Giovanni's ass in case your wondering

Mewtwo: good, that guy deserved it

Jacob: true, but you know, not all humans are like him

Mewtwo: how would you know

Jacob: I've been with some, some are good, it's just the bad people that give humans a bad reputation

Mewtwo: if there are good human then I haven't met them, every human I met never cared about me, I'm just an experiment to them, I'm a clone

Jacob: they're wrong mewtwo, you may be based on another pokemon, but it's obvious your a different being

Mewtwo: I'm glad you understand

Jacob: yep, so is this where you live

Mewtwo: yeah, I was planning on destroying the human race, but I decided to just stay here, where I won every bothered by humans

Jacob: I guess, say why don't you come with me, I mean I may have some human friends but everyone else at home are pokemon.

Mewtwo: really, well what about your human friends, how do I know I can trust them, how do you know they're not evil

Jacob: well to honest three of them once were but they didn't mean too, they were tricked by Giovanni

Mewtwo: still, why should I trust them

Jacob: because I know that they're good people, I can sense it within them, listen mewtwo, I know you haven't had the best relationship with human, but that doesn't mean you can assume that every human is bad. Humans are complicated, not every human is the same, some are evil like Giovanni, but some are nice and care about pokemon, some humans spend their whole life helping pokemon, like my mother

Mewtwo: your mother is human

Jacob: yes

Mewtwo: how does she treat pokemon

Jacob: she's treats them with respect and kindness and so do I, pokemon are good creatures who deserve to be treated well, even you mewtwo, I can help you when it comes to human, I can show you the good ones, you can stay at my place and live in peace with me, my friends and the pokemon

Mewtwo: are there bad people in your world

Jacob: no, in fact I'm the only human in my world, well until I bring the others back, but don't worry, no evil human will set foot in my world

Mewtwo: hmm I don't know

Jacob: come on, trust me

Mewtwo: hmm tell you want I'll join you if you beat me in a battle

Jacob: what?

Mewtwo: yeah, a lot of pokemon say that you're unbeatable and I want to see if thats true

Jacob: alright mewtwo, I accept your challenge

Mewtwo: good

Jacob: get ready mewtwo cause it's fighting time

[There should be a GIF or video here. Update the app now to see it.]

Jacob grew a some wings as he and mewtwo went into the air

Mewtwo: you ready Jacob

Jacob: I'm always ready

Jacob and mewtwo flew towards each other as their fists collieded

They then began to rapidly attack each other like this

Jacob: now this is more like it

Mewtwo: glad your impressed, let me show you more

Mewtwo flew back and launched a shadow ball like this

Jacob dodged the attack

Jacob: ha, that all you got

Mewtwo: not at all

Mewtwo used psystrike, Mewtwo creates a white force field that expands rapidly from its body

Jacob: barrier

Jacob created a blue barrier that surrounded him, once the psystrike made contact, the psystrike exploded but the barrier protected Jacob, Jacob then noticed that mewtwo was gone

Jacob: huh, where did he go?

Mewtwo then reappeared behind him

Jaraja:(Jacob's mind) Jacob behind you

Mewtwo was about to punch Jacob but Jacob moved out of the way just in time

Jacob: nice try, but sneak attacks won't work on me

Mewtwo: oh yeah, well try this

Mewtwo used swift, Mewtwo's hands glowed white as he spread them wide open, forming multiple yellow stars in front of him. The stars are then fired at Jacob like this

Jacob then flew off as the stars began to follow him, Jacob then noticed that the stars were getting closer to him, jacob then had an idea, jacob began to fly towards mewtwo, jacob then got right into mewtwo's face as he then flew upwards, that was when mewtwo noticed that he led the stars towards him, the stars then struck mewtwo which did some damage to him

Jacob: haha, this isn't the first time I've dealt with swift, now take this, silver wind

Jacob launched multiple silver crescents at mewtwo which did a lot of damage, but mewtwo then got up and teleported in front of Jacob

Mewtwo: take this

Mewtwo mega punched him in the stomach which sent him crashing to ground and into three giant boulders, Jacob got back up and dust himself off while mewtwo levitated himself in front of Jacob

Jacob: hmm nice punch, but it's gonna take more than that to beat me

Mewtwo: same for me

They both charged towards each other as they unleashed a fury of blows at each other like this

They're punches created shocked that shattered multiple rocks, they then placed their hands together as they tried to overpower the other, they're power was so immense that the floor they were on cracked and sunk like this

Mewtwo:(struggling) you are strong kid, but I'm stronger

Jacob:(struggling) pls, you haven't seen nothing, spirit burst activate

Once he said that, a massive blast of light blue energy bursted out of Jacobs that blew mewtwo back and sent him into a giant rock, mewtwo looked up and saw Jacob in a new form

blue aura was coining out of him like this

Mewtwo:(shocked) wha-what is this

Jacob: this is my spirit burst form, this form drastically increases my power far beyond anything you've seen

Mewtwo: oh yeah

Mewtwo ran up and mega punched Jacob in the face, but it didn't do much as Jacob just looked at him

Mewtwo:(shocked) what!

Jacob: my turn, mega punch

Jacob punched mewtwo in the stomach which sent him crashing through multiple stone pillars and doing a lot of damage to mewtwo, mewtwo then got up and fired multiple shadow balls at Jacob, but Jacob just swatted them away like this

Jacob: megahorn

Jacob summoned a giant horn on his head that turned green and multiple shades of yellow as he charged at mewtwo like this

Jacob rammed the horn into mewtwo chest which sent him through multiple stone pillars as he fell to the ground, mewtwo slowly began to stand up as he saw jacob walking towards him with blue aura coming out of him

Mewtwo:(shocked) how strong are you?

Jacob: I'm more than just strong, I'm beyond strong, I am beyond anything you have witnessed mewtwo, and this is over, mega punch

Jacob punched mewtwo like this

Mewtwo was sent crashing into the cave's wall as he then slid down and fell to the ground, the aura then disappeared from Jacob's as he walked up to mewtwo and healed him, mewtwo then slowly got up and looked at him

Mewtwo: okay, you win, so I guess that mean I'm joining you

Jacob: yep

Mewtwo: okay

Just then mew appeared

Mew: male

Mew: hey jacob

Jacob: mew, what are you doing here?

Mew: oh your father sent me over to see how your doing with mewtwo, so um did you win

Jacob: yep

Mew: great

Mewtwo: uhh is this actually what I'm a clone of

Jacob: yeah

Mewtwo: but he's so small, no offense

Mew: none taken

Jacob: that I can't man

Mew: yeah me neither oh another thing your father also wants you to catch me, he said that you earned it

Jacob: okay

Jacob then caught mew

Mewtwo: so are you gonna catch me now

Jacob: yep

Mewtwo: okay, I'm ready

Jacob then caught mewtwo