193X, the year where the Mafia and powerful families bloomed. Among them, stood two people that would change the history of Undertale City once everything fall into place. Hand in hand, both of them will carve the path of the tales of Undertale City. Sacrifices have to be made and out of the two, who will be taken and who will be given? (Gaster x reader) (Gaster!Sans x Reader)

Some days, you feel a bit under the weather. Luckily you have a monster boyfriend to cheer you up. (Sans x Depressed!Reader fluff)