Mermaid (2023)

Both MLs are saved by a mermaid and a treasured jewel is stored inside their bodies that the mermaids want back.

Both are about the relationship between the mermaid FL and the rich human ML.
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Both are about the relationship between a human and a mermaid/merman.
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Both are mini dramas that are about the relationship and connection between a human and a mermaid or merman.

Both are mini dramas that are about the relationship and connection between a human and a mermaid or merman.

Both are mini dramas that are about the relationship and connection between a human and a mermaid or merman. In both, the human has an object (pearl/jewel) inside them that belongs to the mermaid/merman and that they need back.

Both dramas are about a human ML who is rescued from drowning by the mermaid FL forging a connection and romance between them.