Welcome to Brave Retribution Across Dimentions (name Pending). I do not own Undertale, Ultratale. nor do I own My hero Academia. Ultra Sans AU! stuff. I might have to delay this due to working on some other projects.

" " = normal talking

' ' = Thoughts

" " = Raising Voice/etc.

Recap. U!Sans Pov

"WOW! you must be really determined... TO KILL ME" I ask the human with a dark humor pun, smile very wide before my pupils faded into nothing.

"Just face it kid... You will never kill me!" I say as the area turns pitch black and a blue ring of light illuminates from my left eye.

Suddenly, the human had a painned expression before their appearance turned entirely white with what seems to be pink cheeks, Red eyes and a unsettling smile. the most distinct feature being what seemed to be a monster's soul within the human's own soul.

I then close my 'eyes' "Why does the brat look like that?" I then ask myself. "Welp, doesn't matter I only have one objective" I say, slightly opening said 'eyes' "to break their neck."

"Now sans... E" The humans says, their eyes opening like slits with their mouth agape before almost instantly vaishing.

"W-where did the kid go!?" I asked. "Look behind you." Said a voice as my eye began illuminating blue again, looking up behind me only to see a lot of red slashes being sent my way. I placed my hands onto the ground to shoot up some bones to protect me from the attack causing smoke to rise. I stand up only to barely dodge a vertical strike. "W-what in the world am I fighting?" I ask myself, not knowing if whatever I am fighting is the human or something else entirely. "FOUND YOU" shouted a voice, the 'human' lunges at me with their knife catching me off guard. I quickly threw three bones toward their direction, but the attack I sent was easily dodged. I dodged some of their attack before aiming and firing a gaster blaster at them which they dodged. They continue to run as I unleashed another gaster blaster at 'them'. I then proceedde to barely avoid the next assault of attacks by raising some bones infront of me or throwing them back with my soul gravity manipulation before taking a breath.

What felt to be a second, they instantly appeared in front of me and I could not react as they readied an attack "W-wait.." I say but was cut off "LET'S GO BURN IN HELL TOGETHER!" 'they' then shout before they cut me in half and was sent quite a bit from the attack. My Coat was now unrepairable as I was laying facing to where the ceiling would be while bleeding out. "papyrus i'm sorry" I say under my breath.

I then had a feeling of being picked up as I then heard a familiar voice "DON'T BE! YOU'VE DONE ENOUGH." The voice says. "i... i know... i just don't understand... how to save all of you" I reply weakly. The voice belonged to my brother, Papyrus. "ITS BECAUSE YOU'RE FORGETTING SOMEONE THAT YOU MUST ALSO SAVE!" Papyrus says. "I wanted to save you, Undyne, Alphys, Toriel, Mettaton, Napstablook, Asgore, and everyone! Who could I possibly forget"? I replied. "YOU'RE FORGETTING FRISK!" Papyrus responds. "WHAT DO YOU MEAN!? THEY KILLED YOU!" I shouted back, tears forming from my eyes. don't ask how. "DID YOU FORGET THE GOOD TIMES YOU'VE HAD?" Papyrus asks. My eyes then widened in surprise. shocked at his reply as I had some memories of the mentioned good times. the hand shake, the convieniently shaped lamp, Marker Telescope trick, Balancing hotdogs on head, the one moment when me and the other monsters were absorbed by that flower, and the sunset and thanking them for it. "Why couldn't i see it before... thank you bro" I reply, as I then smile. "DON'T THANK ME!" "THANK EVERYONE" papyrus says before everyone tells me to bring the human back. "WELP WE BETTER GET GOING!" Papyrus says before I am left alone again. "I'll see you there..." I say before I hear something.

"SANS!" The voice shouts, revealing it to be asgore himself holding something. "CATCH!" He shouts once more before throwing it at me and over what could be something else entirely that I am still going to refer to as 'Them' or 'It". "THE SOUL!" they then shout before tripping on what seems to be some roots. "Oh no you don't!" Says a flower. "Hey! Smiley Trashbag! You better win this!" the flower says before 'it' slashes what is now identified as flower repeatedly and standing up "I MUST HAVE THAT SOUL" 'It' says going to run towards it before Asgore jumps onto them, holding 'them' down with his trident. "You will not win!" Asgore says. "And Sans, I leave the faith of all to you!" Asgore finishes as what seems to be a container holding a orange human soul into it in my hand. "I am sorry for leaving such an important task to you-" Asgore says before getting interuppted by being mercilessly slashed to the point of imploding. "ASGORE!" I shout "I promise... to all those who have fallen..." I say, absorbing the contents of the container as a Orange aura begins to surround me. "I WON'T LET YOU!" 'It' shouts as they leap towards me. "That your efforts will not be in vain" I continue saying as the orange aura fully surrounds me. "I WON'T LET YOU!" 'It' shouts again. "I WILL NOT FAIL YOU!" I then shout, my blue illuminated eye turning orange as I release a shockwave around me, forcing 'It' to jump back.

[ Song; Delta Sans theme (Deltalovania) Begins playing]

Normal POV

Sans had what seems to be a White longe sleeved sweater of somekind, a Gaster blaster strapped to his back as if it were a jetpack. Similar to his opponent's appearance, he had what seemed to be a Orange human soul with a monster soul inside of it. Sans now had Orange gauntlets with a single hole on the top of where the hand would be in the shape of the heart. Sans also had thick black streaks that ran down from his eyes to his chin as he had a wide grin on his face. He had a faint outline of a pupil on his right while the one on his left was illuminated orange. Using the Gaster blaster on his back, he used it to launch it at his opponent as they were still in shock at what happened as a fist was then rammed into their gut, was then uppercutted, kicked, and had what seemed to be a more draconic like gasterblaster fire a larger blast then usual before sans lifted his hand to reveal hundred of bones in the sky, launching them towards his opponent like how this battle started. 'It' summoned five knives and began to dart with the bones trailing behind, slamming into the wall as 'it' then jumped from bone to bone to dodge before attacking sans only for a short exchange of attacks and dodge/blocking to happen. Sans rolled out of the way of the next attack and another attack was sent his way but vanished behind his opponent only for them to look behind them as Sans was charging his own gaster blast from his mouth and firing. Sans then landed while taking ahold of a bone in his hand, pointing it to 'it'. "huh, I might have overestimated you..." Sans said to 'it". "WELP... NO USE IN HOLDING BACK" 'It' says before their entire body turned red, leaving their eyes with a distinct black colour. "THE REAL FIGHT FINALLY..." 'It' says as they both say "BEGINS" in unision. They both went for an attack but Sans blocked it and knocked them back and went to land a hit but then they both did another exhange of hit and dodge. "HEY SANS, I GOT A QUESTION. WHY ARE'NT YOU TAKING THIS SERIOUSLY?" 'It' asks with a curious yet heavily confused look on their face. "So you noticed huh?" I reply with a shrug. "about time I get serious" Sans replies with both eyes having orange glowing pupils. "and the answer to your question is... THE FIGHT WOULD END TO FAST!" Sans says. "DO'NT GET TOO COCKY!" 'It' replies, raising it's now sharp arms.

Sans then slowly raised an arm before pieces of the ground shot up and surrounded 'It' before being trapped and quickly encased in the pieces of the ground. Sans then closed his fist to make it so that the encasement would have easily been too small of a space for 'them' to fit in but they break free as if nothing happened to their body and launching an arm at Sans that was expanding, grabbing him by the face and then flinging sans only to grab sans by the foot and onto the ground and launched again. Sans then sent an upwards kick to 'it's' chin, before lifting himself up for another swift kick and a punch before charging up a large gaster blaster only to side step out of the way and the gaster blaster being destroyed. 'They' then launch an attack that only cut Sans's cheek as he then spun to behind 'it' in the air essentially doing a axe kick that met with 'their' face and ten into the ground leaving them surprised. Sans then smirked and lifted an arm up, making three blue bones lift through 'it's' body forcing them to remain in place. "I CAN'T MOVE..." 'It' says. "It's over..." Sans replies as he takes a breath. "once you're dead Frisk will reset and I will do anything in my power to save frisk from this genocidal path." Sans then tells 'It' only to hear laughing. "What's so funny" Sans asks. "DO YOU KNOW WHAT HAPPENS WHEN A HUMAN MIXES WITH A MONSTER SOUL? BOTH SOULS LOSE THEIR UNIQUE TRAITS..." 'They' then say only to be interuppted by a different voice from 'it'. "Sans! Don't listen to them!" they then say. "Wait... are you saying..." I then began to say "THAT'S RIGHT SANS..." 'it' says again in the voice it used in the battle. "FRISK CAN NO LONGER RESET!" 'It' says before swapping to the other voice "THEY ARE LYING!" "they" say. "KID!" Sans then shouts. "THE TRUTH! NOW..." Sans then commands. "I can't reset anymore..." They say as the bones sink into the ground, freeing them. "I'm free?" They then asked confused before realising the oppurtinity. "SANS HURRY FINISH ME OFF!" 'They' then say before it shifts back to the other voice. "I KNEW THAT IF I ALLOWED FRISK TO SPEAK, I'D BE FREE AS SOON AS I TAKE CONTROL AGAIN" 'It' says.

Sans had tears rolling down his face silently. "DON'T WORRY SANS..." 'It' says as they form their hand into a spinning drill like attack. "YOU'LL BE WITH PAPYRUS SOON..." 'it' then launched towards sans, going to use the weapon at san's soul before a sudden flash happened.

Sans was suddenly alone floating somewhere as if nothing happened at all. "Where am I" Sans then asks. "HEY!" a voice then shouts, surprising sans. "HUH!?" Asks a confused sans as he then turns to look at a Orange human shaped being. "SANS, DO NOT BE AFRAID... YOU MUST FINISH THIS FIGHT" the being then says. "What do you mean?" Sans then asked confused. "YOU ARE AFRAID OF KILLING FRISK BUT SANS... DO THIS FOR FRISK... FIRSK IS ALREADY GONE... ONLY CHARA EXISTS NOW AND THE WAY THINGS ARE GOING... YOU ARE THE ONLY HOPE LEFT" the being says before morphing into the shape of a heart/soul. "BUT THERE'S NO WAY YOU'RE SCARED, BECAUSE... you are filled with BRAVERY"

Sans then blocked the incoming attack, his body now completely orange. Sans shrugs off the attack, leaving chara to back off from the assault. "WHAT'S UP WITH THAT FLAME?" Chara asks themself. "IT FELT LIKE I SHOULD BE SCARED..." Chara adds as they grit their teeth. "I think its about time I ended this... This is for everyone..." Sans then says before appearing infront of Chara, making them jump back and preparing two drill attacks and jumping at sans. Sans closed his eyes and held his hand open as a ball of energy radiates energy from his palm, before he closes it and crushes the ball of energy. "this is for everyone." "AND THAT INCLUDES YOU TOO FRISK!" Sans then shouts, opening their left eye, before launching himself at chara with his own attack making the double drill attack and san's own punch attack collides. Sans grits his teeth before Sans breaks though chara's attack, leaving them surprised. Sans then had a smirk with one eye closed saying "get dunked on!" He then says before a giant explosion occurs.

[ Song Ends ]

The scenery fades back into the judgement hall with Sans standing over the body of frisk. "Rest in peace frisk." Sans then says "I failed to protect my universe... But I will protect other ones!" Sans says snapping his fingers, creating a doorway of light and walking into it. "Take care bro." Sans then adds before he and the doorway fades, unknowingly that fate has other things in mind.

The next thing Sans knew was that he seems to be falling. "huh... This is not what I had in mind..." he then says to himself as he notices that he seemed to be crash landing in a City District of some kind and quickly uses the gaster blaster on his back to quickly make it so that he took a nosedive and went back up into the air to get a better view of his surroundings before landing on a nearby city and noticing a veiw interesting details of the people below him. "This seems interesting... some of them seem to look exactly like monsters, but they still have human souls. I guess I should have rested after that battle before launching myself elsewhere.." Sans says, enjoying the view before hearing a commotion happen from the other side of the building at ground level.

The only current original stuff was the bottom. The first stuff was from the first video of Deltatale or whatever it is refered as. It kinda leaves off at the end and goes into the actual crossover at the end of the first video just for a recap stuff. I am honestly not Expirenced in doing more than 1,500 or more in a single chapter, and since it was nearly 2,240 words or so, do not expect the chapter to be as long, and I might hold off on doing the next chapter until I officially have posted other stuff I am planning on doing even though there is only -100 or so when the actual crossover stuff happened. This will take place before or after Deku gets into U.A, but I am not sure the exact at this moment.