Board Thread:General Discussion/@comment-31252171-20171002090018/@comment-31252171-20171006043511

the knoledge that a monster can take a humen Soul is a thing that everybody in the underground knows, and when flowey had the power to reset, he was able to do everthing, there won't any "runs" he was bound to, so he knew what characters would do in every given moment of every possible outcome until frisk came