(update so not as cringe to the point of my eyes burning out whenever I look at it)(5x flag)sans used to be science sans but later on in his life he lazy Gaster broke sans 2nd eye by accident and Gaster died and sans became lazy etc. The blue jacket sans is current sans and this takes place in a geno route.
ok dis art by me coding by @Mimi-thecatnd by @elctrofighter32