To The End Of Time (Sans X Reader)
(Read the first book! This is the second one!)
A whole new timeline, yet you try to forget him. Monsters are now on the surface, and of course you see him. But your new boyfriend Jason doesn't approve. He hates monsters, wishes hostility towards them. Soon you started sneaking away to visit him. You missed him so much, and so did he. Soon, Jason starts getting....a little too hostile. Towards you.
(I don't own Undertale or any Undertale characters that appear in this fanfiction. The cover picture is not mine, although I edited it.)