Found 4 mystic water pokemon Stories

After she was caught as a rogue in the woods while trying to escape from her father's killers, she was forced to Marry an Alpha who detested her like poison and used her as spawn for his pleasures but she became Mysterious when she showed a strange signs of powers attracting other people to her like a magnet.
Another showed interest in her and all hell broke loose.

Mermaid and Lycan
“Enough,” A deep human voice sounded.
The two smaller wolves stopped circling at once, their ears curling back and their bodies crouching low in submission.
Mila hissed a warning between her fangs.
“I said, enough.” The voice spoke again in a deep tenor of an alpha.
While the voice was mostly meant to be used on other wolves, it could affect other species to an extent. Mila felt some of the power go from her limbs and the unicorn bowed under it.
No, she was...

Esmeralda, the daughter of the powerful Moon Goddess, finds herself trapped in a life controlled by her controversial and selfish mother, who possesses the title of the Bird Rain Queen. Despite her mother's disapproval, Esmeralda falls deeply in love with a humble and kind-hearted young man, against all societal expectations. The pained path they must tread becomes a quest for true happiness, as Esmeralda yearns to break free from her mother's hold and find her own destiny.

Turning into a tiny snake isn't quite the dream Hydra had on the night of her eighteenth birthday. So, with a failed morph, a Kin that doesn't want her and parents set to commit treason on her behalf the only thing she can think to do is get away from the life she's lived for the past eighteen years.
Only running away doesn't go as smoothly as she hoped it would, because it never does, and she finds herself among a unique clan, set to change the world she's knows it. Through meeting new friend...