Sanji picked up a girl one day. He was fifteen years old at that time. That girl looks like eleven or twelve years old. When I picked up the girl, she fainted on the rocks near the restaurant. He was dirty. Even if the light golden curly hair is wet, it looks as if it is dry and has no luster. As thin as skin and bones. The above is actually not the point. The point is - this girl is a mermaid lady. A few years later. Sanji met this girl again. "Hey Sanji, will you marry me?"