So uh a lil au concept I had

basically Cosmo is like a siren who despises pirates and uh wants to kill them for uh hurting the other sirens so she [yes Cosmo is a woman cus I can] goes to the human land and uh studies the people there but ends up finding a pirate ship which has captain Shrimpo [her worst enemy] getting the pirates ready for a hunt to find more creatures of the sea so Cosmo sneaks on board and poisoning the pirates drinks and hides for a bit until night time. So night time arrives and Cosmo goes back into the sea but gets noticed by the deck cleaner, sprout. [I cant explain more cus I'm tired so if u like it so far I'll make more art.]