Commission for Merman1234

Backstory is inspired by Lovecraft's universe:
A very lonely woman finds a community that she seemingly can fit in. The members are strange, they have fish-like features and swim at night. She makes a few friends but eventually they disappear. By asking around, she finds that they belong to a cult that transform into sea creatures. Missing her friends and wanting to join them, she seeks out their leader and is given a special potion. She travels to the sea out of sight and drinks the potion. However the cult leader is not someone with good intentions. As she transforms, the poor woman begins to loose her memories and her humanity..