Board Thread:General Discussion/@comment-27907368-20160506131212/@comment-27907368-20160519175717

Yellow is "determination," or being able to choose to do one thing or another. I believe that the red SOUL seeks to go one step further than this.

They alone want to decide things and how the story progresses. That is, they seek to become the only being whose "determination" matters. They want to determine the future. They want to become fate.

Once they have determined the future, there is no need for any other being to have determination. This may be why multiple SAVE files can be present, but only one physical entity can control them.