I don't own Undertale
He has always hated himself.
He wouldn't- no- couldn't look in the mirror. each time he did... He felt more empty.
But that was okay! He had the perfect disguise- puns. Lots of them. A big 'ole fake smile.
Everybody thought he was fine- but- nobody would understand, nobody could see his pain. He looked happy.
But he wasn't
His tall brother never saw through his lies, he never noticed the fresh cuts or sometimes the rope lines- but Sans didn't care. In fact- it made him happier.
But was he truely happy? Could he even understand happiness? To him, it didn't matter, now did it? If it did, would he be like this? Would he be a pile of dust? Or would he be smiling sincerely with his brother while calibrating puzzles?
It was unknown.
New cut, new scar, another pinch of pain to show how empty he was. Five more? That wasn't enough. Soon his ribs were covered by little cuts that wouldn't matter to most monsters.
But for him? It did. He had 1 small pigment of health, those cuts could kill him- even if he was made only of bones.
Each ounce of pain ment something to the short skeleton, perhaps how he felt or for each of the puns he made in a certain place.
And Papyrus wondered why he slept in so long, he was regaining his health.
Whenever he'd kill you or Chara, he was committing suicide. He wanted to die! Just not... Not by his own hands. Why would he put up such a fight? To make it seem like he was trying, to make him proud.
But... He knew. He always knew, after all, he was scattered across time and space...
After they got to the surface, Sans hid in his room more often- he wouldn't leave! Or so they thought... At one point since not leaving the room, Undyne knocked down the door.
it was almost bare. Not was laid in it exept for a box full of mysteries notes, a bed(with a jacket on top), and a desk. Alphys tried to translate the notes but- they were to complicated, Papyrus begged them to leave until he noticed the jacket.
The jacket was covered in a silver dust, it was nowhere else, just on the jacket. Sans favorite jacket, he never took it off. They searched the pockets and found what seemed to be translations of the notes, a code for them.
The notes talked about timelines and anomilies, their were apparent rips of folds in the time's code. Time seemed to be fading.
Eventually they found another note and what had happened hit them. Hard. They cried as they read his note over and over.
They couldn't believe it. He had... He was... It was...
His suicide.
Sans is my favorite character in Undertale- why have I done this!? *weeps in emo corner*