Board Thread:Questions and Answers/@comment-32948273-20160129174948/@comment-27030189-20160402182925

I Think, That He Teleported You To A SAVE File He Had Before You Showed Up, In A Hidden Void Where He Lives. It IS Flowey's World. As Said In The Wiki, If You Backtrack You Could See Him, If Only For A Second. He Couldn't Have Absorbed Monster Souls, Because He Wanted Yours, First. Also, I Know This Is Off-Topic, But If He Had Won, It'd Be The Underfell AU...