🧜‍♀️Siren

When a demon discovers Elunaria—the last siren with a voice that kills and glowing purple tail—lurking near a village, he drags her before Muzan Kibutsuji, forcing the ancient sea predator into a deadly game with the Demon King himself.

When marine biologist's daughter Selena reluctantly joins her parents' expedition, a chance encounter with an ancient siren named Lucien transforms a routine research trip into a nightmare of obsessive desire, where escaping his possessive depths may cost her everything—including her humanity.