
You can read the rest of this on novel mic. Not sure what's up with the chapters here and there though. Where this stops at 297 here is around chapter 150 there. Maybe because the chapters there are longer? But this gets really exciting when she returns to the mermaid world as the queen. The ML also has a secret identity...

I read the last 3 chapters on manga fire.to
The main couples' story ends around 500 then the rest are other couples stories. 1st is Jie's and Yiyi's story. I found it very boring. Then Mochen's love story. I loved that one. Wish there was more of them. There's action and romance. Last is the green haired docter and Yiyi's moms story. It was ok. Everything ends happily with everyone. But none can beat the love of the main couple.
It's finally complete with 148 chapters. And they lived happily ever after...