My au:mighttale,might time duo:undermight chara,might sans

Description: Backstory:it was a normal day in the on the surface.with gaster too.but then the human reset.Everybody couldn't remember execpt flowey,chara,Sans,frisk,and gaster.sans had enough of the human reseting.So sans as soon as they fell down sans started to fight them.But the human already knows how to dodge his attacks and kill him so they did.But he survived!So he fled the battle and went to Gaster.Gaster was really surprised and scared.He saw sans health it was 0.00001.Gaster had some DETERMINATION but he knew that it wouldn't work.so he had some artifactial monster dust.Gaster mixed it with the DETERMINATION.Gave it to sans.Gaster said to take 1 drop each day.But one day sans health didn't go up.So he took another drop and another.He felt fine for a while.20 minutes later he felt tired,dizzy,and sick.Gaster saw this and he asked if all monsters,and humans come to his lab.Then he tested the mixture of artifactial dust and DETERMINATION on all monsters,and humans and they all had the same effect.but then half of them started turning scary.sans was first his side was super strong.Sans gotten used to this demonic side of his.They started to get along.Soon they became friends.but then UM!chara got teleported to this universe somehow.they both met at judgement hall.Sans violently slams her to the wall.She then quickly explains how she got here.They both start to get along.then the real human from there universe came.They both got ready to fight her.They team up.So after a really long fight sans half side started taking over.But sans was able to fight his urge.So the other side only had half control.Sans hears chara say watch out before he blacks out.He wakes up with a scar on his chest.He hears chara's voice."huh" Sans said.He sees the human impaled with knifes.they get out of judgement hall.they are now known as might time duo.(i might make a might time trio)