Lament of Fontaine
In the heart of Fontaine, beneath the glamour of the opera and the shimmer of the court, a forgotten melody stirs.
Fukuni - a graceful actress and dancer beloved by the stage - harbors a secret written not in ink, but in blood and saltwater. Unknowingly descended from an ancient Khaenri'ahn bloodline, she is the final bearer of the Resonant Aria, a forbidden song-magic once used to calm Leviathans, purify Abyssal corruption... or split the tides of the world in two.
When the Abyss Order returns to wage war against Fontaine, they seek her voice - twisted into a corrupted symphony that will shatter the nation from below. But Fukuni refuses to sing for their ruin. Joined by Neuvillette, Furina, Escoffier, and the unexpected arrival of Childe, she must master her gift, awaken the Leviathan Aequoreus Rex, and choose whether her song will heal the world - or drown it.
As love blooms, loyalties waver, and ancient memories surface like shipwrecks, Fukuni must uncover the truth behind her pendant, her past, and the final verse of a song the sea never forgot.
"Some voices are meant to echo forever... even if they break the world."