Lord Gu's One and Only: His Mermaid Wife Is Everyone's Darling

[Both leads are each other's first + mermaid princess + adored by everyone + love at first sight + extra sweet]

Sang Nian is the first princess in a hundred years of the merfolk's Sangyun Palace.

She grew up cherished and pampered, and her people even broke a century-old tradition to protect her.

But her longing for the human world drove her to run away from home.

One misstep led to a human deceiving her, nearly costing her life.

By chance, the human older brother she'd saved years ago rescued her and took her home.

Gu Yubai is the head of the Gu family, a clan with immense power in the empire.

Ruthless, influential in both legitimate and underworld circles, and utterly cold.

Yet deep in his heart, he'd kept a tender place for a little girl for four years.

At last, fate brought them together, and he used every trick in the book to lure her home.

From then on, the powerful Lord Gu of the imperial capital had a little shadow by his side.

By the time Sang Nian's brothers came looking for her, she'd already lost her heart.