Lord Poseidon, Your Secret Identity Is Showing

[One-on-one romance]+ [Merfolk]+ [Past and present lives]+ [Fantasy setting]+ [Romantic fantasy]+ [A little angst, lots of sweetness] [Past life] Straightforward princess VS tsundere merfolk [Present life] Sacrificial bride VS devoted sea god [Next life] College intern VS mysterious boss There’s no such thing as love without a reason. It’s simply that what you can’t forget will eventually find its way back to you. [The Princess’s Perspective] To appease the angry sea, I was thrown into it as a sacrifice. I thought I was surely going to die, but to my surprise, I survived and even met the legendary sea god. He said he would marry me in ten days and prepared a grand wedding. But I can’t accept a marriage arranged between strangers. I don’t want to marry him, so I decide to find a way to escape the deep sea... [The Sea God’s Perspective] After waiting for decades, I finally got to see my beloved princess reborn. What I never expected was that she’d become a little girl and forget all about me. Well, all I can do is wait patiently for her to grow up. More than ten years later, I look at my former beloved, now a graceful young woman, and can no longer keep my surging love hidden. So I set a trap to draw her into my life and do everything I can to make her fall in love with me again...