His Sea Maid（Celestial Mate Series 1）

Finn, powerful vampire king and direct descendant of the first; a ruthless ticking time bomb but a good ruler. All he wanted was to seek redemption for his past mistake and when he found the way, he seems the help of three sisters who are professional thieves. He finds himself attracted to the youngest but waves it off because she's "human". But a incident made him realize the redemption he seeks is in front of him, his mate. Now he has found her again, he was not ready to let go. But Finn finds out his mate is not so human after all and holds secrets and a past that could take her away from him. Suzanne, a runaway mermaid, finds out a lot about her birth that she does not know and must do everything in her power to prevent it from swallowing her up. Would she be able to unlock her power in time to save herself? Publisher：i&i Publisher