Sans was in the middle of a relaxation.
"It has been 3 years since we've all left underground, now there's nothing to do except sitting here and have a relaxation" that was not until Alphys and Undyne arrived, Alphys was holding a strange machine.
"H-hey guys sorry we're late, we're having trouble with my new invention" said Alphys.
"LET'S GET THIS PARTY STARTED PUNKS" shouted Undyne.
After that the party went all day long until it was midnight.
"Welp, gotta go home see yah" said Undyne.
"Yeah, bye" said Alphys.
"BYE" said Papyrus.
At the mean time while Sans was still asleep he snaps out of it and stoods up knowing that there was a machine that was been left by as soon as his brother Papyrus arrives and calls for him, Papyrus saw that there was a large glow on top of the cliff as the glowy light suddenly explodes a flash, after it was all clear Papyrus regain his vision as he runs to see Sans, but he can't find Sans anywhere.
In another place.
The Fire Nation.
Sans was now standing in a place that looks like a Chinese historical structure.
"What the? Where am I?" Sans looks around without saying anything.
"What is this place?" said Sans.
When suddenly he heard the voice.
"HEY, YOU THERE WHAT ARE YOU DOING HUH" shouted a man.
As Sans turns as he sees that the man seems to be wearing an armor and an Oni helmet.
"Wait, is this just an act? hey I'm not joking" said Sans, without even hesitating the guards all swings their spear towards Sans, but he dodges it.
"I don't know what is your motive, but I'm not just gonna stand here and let things get worst" said Sans as he snaps his fingers and then floating bones starts to appeared.
"WHAT THE? ARE THOSE BONES" shouted the man.
"IMPOSSIBLE, IN THIS WORLD THERE ARE ONLY 5 BENDERS, BUT A BONE BENDER" shouted the guards.
"Report this to the emperor I'll show this bone bender what's real power is" said the man.
"Alright" as the other man runs away while the other man stays here and uses his fire power to attack.
"Heh" Sans grin as he raise his hands and points it towards the man, the bones all charged at the same time towards him.
"So be it" as the man do a fire technique dancing as he throws out fire.
"Fire magic, so it appears like I was just, I'm in another world well then let's show them what real fire power looks like" Sans jumps to the other side as he raise his hands from upwards/
"Huh?" from the ground rises up a pile of bones.
"GUH" The man was injured hardly.
"Huh, strange I thought that in your world there are no monsters, let's check" Sans check the guard.
"Name: fire nation guard"
"Lv 5"
"ATK: 45"
"DF: 35" (14)
"HP: 15"
"He is injured badly thru the damaged of the bones".
"Oh, shit that guys ATK is way beyond my thoughts his HP is normal adult human's HP but his ATK is so strong" Sans has no other choice.
"Welp guess I'll be leveling up" said Sans as he just let's the guard die.
"GUUUU-" without further or do Sans spawn a blaster to end his life.
"You earn 230EXP, LOVE INCREASE".
Sans checked himself.
Name: Sans
"Lv 5"
"ATK 10"
"DF 10"
"HP: 15"
"The weakest feels like he's about to go on a tyrant to get his level increase".
"Heheheh exactly" said Sans.
"HEY, YOU THERE" as Sans looks towards the side where he was been called.
"WHAT DO YOU THINK YOUR DOING YOUR COMING WITH US" shouted the guard.
"Oh, that won't be necessary" said Sans as his right eye glows out.
"And your saying is that he is a bone bender" said Azula.
"Yes, I have witness it all" said the guard.
"Lead me to him" said Azula.
The guard just then took her to Sans only to see that hundreds and millions of guards have been killed, Azula was shocked only 1 bender could kill away this much of an army.
"Hehehehehe" Sans just stands there and checks his stats.
"Name: Sans"
"Level 35"
"ATK 100"
"DF 100"
"HP 250"
"He is becoming stronger than ever without going insane".
"Huh?" Sans turns around as he saw Azula and the guard from earlier.
As he walks towards the girl and looked at her.
"(Hmmmmm, I'll check her)" said Sans as he checks her stats.
"Name: Azula"
"Level 45"
"ATK 300"
"DF 150"
"HP 500"
"She is the princess of the fire nation and also the only person who could used blue fire".
"GUH (I-I can't win her, she's stronger than me, wait no my powers works stronger when people carries in them more and more sins)" Sans just then checked her stats compare with his.
"Name: Sans"
"Level 35
"ATK 100 (200 because Azula carries in her sins of murdering and massacring)"
"DF 100 (0)"
"HP 150"
Sans grins as he is about to do something really horrible.
"Well sorry princess but it appears like play time is over" as Sans snaps his fingers and a pile of bones rises up from the ground and impaled Azula brutally.
"I've seen all of your sins, you've been supporting an evil emperor who attempts to uncover the darkest and strongest power of this place, well it won't hurt if he lose away a member of his family" as Sans just let's the poison and the damage kills Azula finally.
"Let's check it one more time" said Sans.
Check
"Name: Sans"
"Level: 50"
"ATK 586"
"DF 586"
"HP 348"
"He just killed away the most vicious and heartless princess of the fire nation".
"Well so be it" said Sans as he smiles up and just then teleports away.