Considering that both Daisy and Orpheus are in the artbook and emperor is not its obvious that he was a late rewrite of the main story and a badly done one.

The emperor is only there to validate the player. If the player trusts him he is trustworthy. If not, then not.
This is especially switches his aporoach to the emperor which also causes the emperor to do a 180.

It also shows that nothing you say to him matters as in the next meeting everything that happened before is forgotten.

It seems that about 1 year ago someone decided to remove all consequences from the game. So the Daisy - Orpheus dynamic got hastily rewritten to only Emperor and also tadpoles were made into pure powerups.