Serena_Walken
When mankind slaughtered all of the monsters, only one survived. With the power of a spell the monsters had used more than once to keep going, Sans is the last monster alive to cast it. Now, four years later, he has located the elusive devil/angel 'Frisk', and his journey to reestablish the kingdom has begun.
Except, this time, the kingdom would never be the same.
We all know Undertale really good by now. We know the genocide. We know the pacifist. We even know of the genocide route that became pacifist that marked out all the pictures of the monsters at the end, making sure you never get that perfect ending.
Well, what if . . . it wasn't Chara that was responsible for that picture?