Little Flower Fairy: The Mystical Hades

Legend has it that before heaven and earth were formed, there was a race that lived in the ocean. Every flower that bloomed was called an Ocean Flower, and the fairies born from these flowers were known as Mermaid Flower Fairies, possessing the aura of both flower fairies and elves. An Ocean Goddess foresaw the loss of energy that would accompany the creation of heaven and earth, so she created a secret realm and sealed everyone in the kingdom inside to keep them safe. Gradually, the energy dwindled. Blessed by the goddess, the sea fairies gained powerful adaptive abilities and fell into a deep sleep, waiting for the day the secret realm’s gate would open.

(The main plot of Season One isn’t very complicated, so I’ve added a few side stories.)

(Season Two may stick closer to the original plot.)