A long time ago, at the Hogwarts Magical School of Witchcraft and Wizardry, there where two best friends called Regulus and Pandora.
Regulus in first grade was instantly selected in Slytherin and Pandora in Ravenclaw. Four years later, Regulus and Pandora became best friends, and for that reason, some people from Slytherin thought that their fiendship was weird.
When they saw them together so constantly, they picked up on them because, according to them, a Slytherin and a Ravenclaw couldn't be friends.
Pandora and Regulus had a healthy friendship over the years. They could tell each other secrets and they knew that they wouldn't tell somebody else.
Regulus at the age of sixteen made the worst choice of his life, becoming a dark wizard. But Pandora knew that Regulus was only not thinking properly.
When Regulus turned eighteen he realized what he had done. He wanted to stop the Dark Lord, so he started a plan without telling a soul; not even Pandora. This cost him his life.
After Pandora found out what happend to Regulus, her sorrows seemed to never end.
Years later, she had her only daughter, whom she called Luna. Since then to the moment she died, she never failed to remind her that the star Regulus would always be there to protect her from afar.