Fishing Island Manager: I Turned a Deserted Island into a Cornucopia

The family was wiped out, the island was deserted, and my younger brother had a high fever—I thought I was going to die at sea. Until a blue light exploded in my mind, and I "saw" the secret of the sea. The pirates accused me of being evil, the merchants accused me of blocking the road, and the navy accused me of occupying the island privately. Come one, kill one. Come a hundred and let them be buried in this sea. But they don't know that the pink gold pearl in my hand is called "Mermaid Tears". Behind it lies the secrets of the previous dynasty, the rebellious intentions of an imperial uncle, and a man who said—— "I'll accompany you."