MentalDisorder!Sans

Description: AU where most monsters is having mild mental illness, or complete insanity. Events take place 190 years after the original Frisk was supposed to fall into the underground Instead, many characters (including Sans and Papyrus) were born much later than usual. Due to the very long wait for the monsters to destroy the barrier, most began to go crazy. They wanted to see the light of the Sun, the night sky, the Moon. Sans got a personality disorder. Only Papyrus remained one of the few healthy monsters. Sans main personality is kinda... insane. He hate humans, only Papyrus stops him from killing. Very concerned about Papyrus, and will give you "a bad time" if you kill him right after the fight. His second personality is normal, but still a little bit insane Sans. His bones are gray because they cannot be washed from this color. It is literally a sign of aging.