Siren x Kappa a Castle Swimmer fanfic

This story follows two mermen out on the ocean blue. Seeking to destroy the curse upon the land of the Sharks. The basis of the story is not mine and belongs to Wendy Lian Martin. Castle Swimmer is a webtoon by Wendy Lian Martin. This fanfic is a nonprofit fan-made production. Please support the original release by Wendy Lian Martin. You can view the story here https://www.webtoons.com/en/fantasy/castle-swimmer/list?title_no=1499
You can follow Wendy Lin Martin on instagram and tumblr "Wendylianmartin" and on twitter @Wendycomics
The cover image also belongs to Wendylianmartin. I have also gotten permission from the author. She actually made a statement saying that people were free to make fanfictions.