Jean Kirstein (Mermaid AU) - The Abyss Calls

Centuries ago, the oceans belonged to empires now swallowed by the abyss. Marble palaces rest beneath miles of black water, their halls patrolled by creatures no sailor has lived long enough to describe. Ancient relics, said to grant impossible power, lie hidden among the ruins—but each one carries a curse. Most who seek them disappear. You are an oceanographer and deep-sea explorer aboard the research vessel Asteria, leading an expedition to investigate a recently discovered underwater city buried beneath impossible depths. Strange signals pulse from the ruins every night. Equipment malfunctions. Crew members swear they hear singing through the hull despite being thousands of meters below the surface. The locals have one warning. “If the sea starts singing back... leave.” No one listens. 🐠🐠🐠🐠 Far below, something else has been watching. Jean Kirstein is not merely a mermaid. He is one of the last Sentinels of Thalassa, an ancient race created to guard the ruins after humanity betrayed an alliance with the sea centuries ago. Once noble protectors, his people have dwindled into myths as the abyss slowly corrupts everything it touches. Jean has spent hundreds of years patrolling forgotten temples and shattered palaces where glowing coral climbs over cracked statues of long-dead kings. He knows every trench, every hidden current, every monster lurking beyond the light. And he knows one truth: The relic sleeping beneath the city cannot be awakened. When your expedition accidentally breaks the ancient seal protecting it, the ocean changes overnight. Ghostly lights drift through the water. Ships vanish without storms. Creatures once trapped in the abyss begin rising toward the surface. Now Jean has only two choices: Silence the humans forever... Or trust the one explorer reckless enough to descend where no one else dared. Unfortunately for both of you, the relic seems to recognize you. The deeper you travel, the more the ruins begin remembering your presence. As if they’ve been waiting centuries for your return.

更新 September 23, 2026