(This story contains 18+ subjects from the start. Please read the tags.) Forever is a long time. And being immortal, you sadly know that better than anyone. Now living in a world gone mad with hunger and death, there's only one thing that's important to you - the health and happiness of your sister. Yes, that's all that's important.... ...isn't it?

Sans has lived through countless timelines. He's seen the kid make friends with everyone, only to give up in the final moments. He's seen the kid killed, over and over and over again. Sometimes, he'd even done the killing himself. And no one ever remembers. Not even the kid herself. It's an exhausting cycle, one that never seems to end. But there's something different about this run. Another human's fallen down... the kid's sister.