There are five princess levels throughout the testing of the Prominence. The levels are to prove to Princess Grace that Fine and Rein are capable of handling the Prominence, and they are judged by how many times Fine and Rein use the Prominence to help other people. The statuses are shown by the liquid in Poomo's Star Vial.
When Fine and Rein reach the Fortune Princess level, instead of leveling up by the Star Vial, they are judged by how well they do now by Grace herself. Grace has the last call in deciding whether Fine and Rein are apt to her own standards to give them the final upgrade.
Below are the five levels of the Prominence princesses. Once Fine and Rein reach the last level, they are able to bring back the power of the Sun's Blessing to the Wonder Planet again.
Fine and Rein are never to tell anyone else about the Sun's Blessing weakening (but it's okay if they find out on their own), make anything living with the Prominence, and/or use the Prominence for their own needs, otherwise they can no longer use the power.
