Special rings

Exploration Stage: Stargazing Terrace
From: Arcturus Star
Description: Indeed, I used to be called an "astronomer." As the name implies, I was a professor teaching astronomy. I was chosen to join the Order of the Five Wise Guardians for my achievements in science. This is the ring I received at that time.
Completed: Only the members of the Guardian Order were allowed to have this ring. Only those who had this ring were allowed to set foot in the laboratories that developed new technologies to make the world a better place.