The Black Panther Prince Was Tricked into Marrying a Beautiful Mermaid

[Male-male romance + mermaid + yandere] The existence of merfolk can cure the rare mental agitation suffered by beastmen. As a result, merfolk were captured on a massive scale until they were wiped out. Su Ran was a merfolk who carried the fate of his entire race on his shoulders. He'd poured drinks in nightclubs, washed dishes in restaurants, sold fish on street corners, and hauled bricks at construction sites. In the end, he discovered that besides saving up to buy Kurillo, the planet best suited as a merfolk habitat, he could also marry the Imperial Crown Prince. As a beautiful, elegant mermaid, surely it wouldn't be hard to trick a black panther into marrying him, right?