The bone-zone (smut) (sans x frisk)

Alright so this story takes place about 5 years after Frisk sets everyone free. When frisk set everyone free she was 14 years old. Everyone in the underground has pretty much moved up to the surface, except for the skeleton brothers and Frisk. Frisk is a little upset, she's been underground for so long it just feels like home now. Frisk is afraid to leave the underground but she's afraid to tell anybody that. Keep in mind, that during the story this is a pacifist route so no one has died and no one is going to die. The storie is also going to be taking the point of view of frisk. Frisk has like Sans for about a year now but she's never told him that. Frisk has also been having strange nightmares. Recently she's seen things in her dreams that she cannot even explain. In her dreams she sees someone. Frisk see someone holding a knife. Someone with a terrible grin. Someone she has met before. Someone she doesn't want to meet again. And who is that someone? That someone......is Chara. Well I hope you all like that little introduction to my story. the store is going to be full of romance, action, and smut of course. I hope you all enjoy.