Gaster morphs the entire room into a void.
"I have dominion here! Give up." He shouts in a garbled voice.
I take my sword and slice a blade of magic towards spider lady and chop her in half.
"What was the point of bringing her here?" I laugh.
I run as bones rain down upon me.
Skull blasters shoot at me at a rapid pace and I quickly run through a scalding beam.
I try and slice Sans but Undyne shoots a spear which knocked me out from midair.
Chara shoots some knives and deals some damage to Gaster as they pass through the gaps in the bone wall.
Undyne launches her self upwards and trus to skewer me.
I dodge right into a skull blaster and get launched into a bone that sends me high into the air.
I rain down strings and barrage Gaster with them.
He blocks most of them with bones then Undyne snipes me again.
I use my strings to cut apart the skulls blasters and Chara stabs Undyne in the back.
She gets up and kicks her away.
I ignore everything else and slam down 64 strings onto her.
I make 4 of the sharpest ones I can make then slice the entire area in a rage.
Undyne blocks my rage attack and Sans makes a dome to block it.
I slice her spear in half then cut her chest open.
I grab her legs but I accidentally chop halfway through them.
I drag her closer to me and start slamming my sword onto her head.
I cut halfway through the helmet when spears start slamming onto my back.
I stab my sword onto her helmet for a final blow and it cracks into half while my sword plunges through her skull.
I jump back then fill her entire body with strings then burst it apart.
No healing like last time.
I take deep breaths as the pain of five spears having stabbed my back finally hits.
The dome starts falling and Gaster summons a massive skull blaster while Sans makes a horde of them in the sky.
I make a string so sharp that it can pierce reality itself with all the magic I have available.
They fire the blasters and the ground splashes due to the force and I send my string to clash against it.
I work my soul in overdrive and make a shield covering Chara.
They clash and the sound is so powerful I lost hearing for half a minute.
The string cuts through the beam and it goes around the string.
It's like a tap running on a spoon.
I make two more strings which cracks my soul more to anchor me and Chara to the ground as the remainder of the move washes over us.
The string reaches Sans and Gaster and it's too wide to dodge.
Gaster just barely managed to survive and Sans is eviscerated.
I kneel on the ground in exhaustion and Chara is trying to get up from the attack but is too tired to.
Gaster is barely even conscious and I decide to end it.
I trudge up to him and try to get my Greatsword to see it has turned to dust in the wind.
I charge up magic in my fist and cough up blood.
I look at my soul and see 2 cracks.
I slam my fist at Gaster and see a bone blocking it.
"T-that was our last magic wasn't it." Gaster says.
I nod and he jumps up shoving me off him.
"Even if you kill me you will not survive Asgore! He will have taken the six souls and fused it within his own." He smiles.
"Chara! Finish this guy."
He looks behind me and sees knives stabbing towards him.
20 of them pierce him which kills him immediately.
His soul pulses strong and I feel a pressure even being around it.
I didn't see Mettaton Gay around so I assumed Chara killed him.
"Hey Chara you kill that gay robot?" I ask
"Yes I did all I needed was to chop him once. It was so easy Warren." She came closer as the void disappeared.
We are back in the hall and see Sans standing.
"I thought you died!" I shouted.
I'm basically done so I tell Chara "Kill him I have no more magic.
I grabbed Gaster's soul and slammed it into my own.
A massive pain coursed through my every being as a monster soul truly strong fused with my own.
My body became more muscular and my bones felt stronger.
I gained the knowledge of all his magic.
Sans like an idiot summoned him at the moment of his death at the last timeline.
I would have died if not for that.
Chara sliced at Sans and he dodged while making his last attack.
(His attack before trying to keep you in the fight forever)
He does the attack and Chara dodged extremely well taking no hits from the attack that even I would take.
It seems she is getting used to her body now.
Sans is basically unconscious while standing due to exhaustion at this point and Chara finishes him off.
Gaster's soul gave my magic back and I asked Chara "Can I get a heal? I need it for the fight with Asgore."
Her hands glow green and I have the feeling of heaven once more.
I manage to resist just standing there for eternity and walk towards the throne room.
"You did a great job in finishing Sans. Excellent dodging." Chara smiled "Thanks! I would die if I took even a single attack you take every fight."
I don't take that bad attacks...
I got speared through the stomach.
My soul cracked thrice due to exhaustion.
I get slammed around every fight...
Damn, I really do.
We head towards Asgore's throne and walk in to see a goat man shining rainbow.
He summons his trident and speaks "Take one more step and your death is certain."
I take a step and a barrier covers us.
Chara trys to break it and doesnt even make a mark.
I slam my my fist against it and it slides off.
Damn it!
I make a Gaster blaster out of my magic and blast him immediately.
He slaps the beam away with a swipe of his hand "You killed Sans." "If I didn't I wouldn't be standing here right now." I reply
He summons a laser cutter and shoots it at me.
It cuts through the ground and I jump to the left.
I punch him with magic charged in my fist and he shrugs it off.
He slashed his trident and a gash appears on my chest.
He goes to stab me and I make a portal to Snowdin.
His blow tears through the trees in the area and my broken pipe falls through.
I smile and grab it immediately.
It's edge seems to have gotten sharper and more brutal as the wood roughed it's edge more.
I use the metal and make a revolver with bullets.
I load the gun then shoot his face.
He was basically in Snowdin and very confused otherwise I probably would have got stabbed.
Now his confusion don't matter because I got a gun.
I tear apart all the metal in the underground and make a giant mechanical suit.
I sit in the cockpit then smash my fist into Asgore.
I got a giant mech this man dead.
I bring my sniper arm and shoot him in midair.
It burst through his back and sends him flying further up.
I keep shooting and he eventually breaks free.
He summons a massive amount of magical power and comes flying down like a comet.
I get out of the mech and turn it into one giant mechanical arm (Think Eustass Kid from One Piece but access to all sources of metal.)
I punch with it and it collided with Asgore.
The metal explodes and he flops onto the ground with some injuries.
I make a portal to the lava in Hotlands underneath him but he holds the side of the portal and closes it.
His legs were on the other side though so he just cut off his legs.
He crawls on the ground to his trident but I pick it up.
"No more winning for you." I summon my magical energy and stab him a thousand times in a second.
I keep this going for a minute until I get halfway done with my magic.
I make a string that pierced his soul then I stab that 10,000 times in a second.
It burns through my magic in 10 seconds then I start stabbing at 2 times a second.
To the normal eye it seems like I just made my trident vibrate so hard it appears in other places.
His soul only just starts cracking.
I slam the trident down with all the force in my body and shove it deep into the soul.
The barrier around us starts cracking and I push harder down.
I scream in rage and I split it in half.
The two halves leak 3 human souls each.
They circle around mine and Chara runs over.
"Your going to break the barrier?" She asks.
"No these monsters don't deserve daylight I can just go along my day then these people tryna kill me. They need my soul sure but it's pathetic when they can only kill children."
I take the six souls and grab Asgore's
"Chara take this. You need a monster soul to cross the barrier."
She absorbs the soul and she gets taller and curvier.
I definitely don't mind.
We walk through the barrier and the six souls start merging with mine.
They are human so no pain is felt.
I feel all powerful and laugh.
I widen my eyes as I realise I live in the modern era.
"Oh shit."