Siren and Kappa: Out of Water

*So sorry for the unrelated story cover, this is my first fanfiction on Wattpad, so I'm not very experienced.
Therefore, I apologise if the story is terrible, which it probably will be.*

A sequel of the well-known Webtoon, Castle Swimmer. After a terrible whirlpool occurs in their part of the sea, Siren and Kappa, a young couple, end up washed up on a seemingly abandoned beach.

Rose just so happens to live quite near to the beach and often goes there to calm herself or paint peaceful scenery.
When she goes to the shore to collect some shells, she notices some figures being thrown onto the sand.
Will she save the two Mermen, and if so what adventures will the three get up to?

Well, you'll just have to keep reading...