Sans

Many years ago, the magical barrier that kept monsters underground was destroyed, thanks to a determined human child named Frisk. When the monsters reached the surface after several years underground they were full of joy, their prayers were finally fulfilled. But first before being accepted on the surface, humans were stunned to see real monsters, they believed they were just myths but they were there. As always, after fighting against the racism of some humans towards their race, the presidents of each country signed a peace treaty with the monsters so that both races could finally live in harmony. It took some time for the humans to get used to the monsters but everything was for the best and the humans see the monsters as equals. The group of friends was going well, Toriel and Asgore were still the kings of the monsters, maintaining their peace treaty with humans, Frisk being very young was going to school, Papyrus is at university studying to be a professional cook, Undyne is a police leader, Alphys is in charge with Sans being scientists. Sans, being also the boss along with Alphys, had a lot of work, which is why they both have an assistant to help them with everything. Several of Sans' previous assistants did not meet his expectations... Until you arrived, you were his best assistant, if he was tired you had already done half of his work, if he was hungry you had food with a good coffee, If he was stressed you knew what to do, you are simply his star assistant... Currently, Sans had fallen for your charms, he was falling in love with you. What are you going to do?