Soleil

is a major supporting character of Auroria. The sun goddess and the oldest of the celestial twins, Soleil was a bright, spirited and energetic deity with supreme powers over the sunlight and fire. Despite her energy and bright nature, she was under great stress over the fact that she was the sun goddess whom brings joy and happiness to the citizens of Jewel Requiem and Earth. She died when she and her sister, Lune, tried to protect the stars from Dark Side during the events of the first season - her soul ending up dormant in the recently orphaned Akatsuki Hinako.

Personality
The sun goddess and the oldest of the celestial twins, Soleil was a bright, spirited and energetic deity with supreme powers over the sunlight and fire. Despite her energy and bright nature, she was under great stress over the fact that she was the sun goddess whom brings joy and happiness to the citizens of Jewel Requiem and Earth. She died when she and her sister, Lune, tried to protect the stars from Dark Side during the events of the first season - her soul ending up dormant in the recently orphaned Akatsuki Hinako.

Etymology
Soleil is French for "sun", hinting towards her status as the sun goddess.