Sans had his heartbroken after confessing his feelings to Toriel, only to be told that she wasn't interested and only wanted to be friends. Sans needed to find something or someONE to fill the empty hole in his heart, and by accident, He chose Chara. Human! Sans x Chara fanfiction, yo.
It had been ten years since they all got to the surface. Frisk shared a soul with Asriel and Chara, due to Frisk, went pacifist. They all lived happily in Ebott Village. Toriel with Frisk, Asriel, and Chara. Sans with Papyrus. Asgore alone. Undyne with Alphys. Mettaton was somewhere else with Blooky being famous and a...