Talk:SOUL/@comment-27064178-20151011003603/@comment-173.168.166.159-20151011092814

It's said in a book at the library that one of the monster burial traditions is to spread the monster's ashes on something they loved while they were alive, so their essence can live on in the item. When Asriel died, his ashes spread on the flower. Then when Alphys gave that flower Determination, the will to live, it became Flowey (Asriel without a soul). Asriel became Flowey because of his essence on the flower Alphys used as a potential vessel for a soul.