Yousei A. Sina

Yousei A. Sina is actually FairySina. The name was created to make her Series more real. Sina, also called Fairy/Fairy-chan, is the creator of the four Sky Pretty Cure Seasons, its charaters, items and everything else that is related of Sky Pretty Cure. She also drew the character profiles of Shining Jewels Pretty Cure and currently works on SHINE 5 Hearts Pretty Cure!.

Etymology
The name "Yousei A. Sina" is a whole pun to her username:

Yousei (妖精) - Yousei (妖精) means Fairy.

A (ア) - A is the initial letter of FairySina's given name.

Sina (シーナ) - The second part of her username.