I still don't get which ending this is after playing it. The closest I got to after replaying the first one is Calamity Release then reject which explains the two being demons. It doesn't explain the others being normal minus the princess being her evil spirit form. Not unless I missed something in that play through of making her one. Only thing I can think of is the line that the water is already corrupted, and it would take some years to cleanse herself. So, making the contract is off camera so to speak.