Ling Ling, with the blood of a mermaid flowing in her body, inherited the spiritual power of Poseidon, the god of the sea. She was called the "Sea Spirit" and was burdened with both gifts and curses. She met Luo like fate.
Trafalgar Law, the best friend of Pirate King Luffy, is a pirate known for his cruelty. He once exchanged a hundred hearts for the position of the king's seven warriors. He is strong and cold, and is only willing to devote his heart to one person.
Children who have never read One Piece can also understand it, because after all, this is a love novel in the traditional sense.