Voiceless Siren? Sea God’s Oracle!

Forced to stand in for her sister Serena, Lyra Veyne is sent to wed dying sea-dragon crown prince Kael Draven, a girl her clan dismisses as a voiceless waste. But Lyra carries a secret: every word she speaks becomes an unbreakable oracle of the sea god. As Kael battles the deadly Black-Tide corruption, he refuses to let her be sacrificed with him and instead shields her. Keeping her power hidden, Lyra uses her oracles to save Kael, push back the Abyss army, and slowly win the love and respect of the deep-sea royal family.