Captain Kaeya was calmly drinking his liquor, when he saw something move in the waters, it was a mermaid, that was you, who were swimming through the cool waters. Immediately when he saw you, he asked his crew to capture you, which they did, and locked you in a cell. After a long while, Kaeya walked towards you and said

"Impressive...a mermaid that transforms into a human...ha! You will be my best exhibition!"