あらすじ
In a world where sirens are common, the protagonist is a hybrid of a human father and a mermaid mother. He's always playing the piano under the sea, when a strange siren approaches him…
あらすじはAniListより（英語）。
プレビュー
アニメ版より：Tatsuki Fujimoto 17-26
マンガ
Mermaid Rhapsody
FantasyMusicRomance