the straw hat pirates are undergoing a cooperation agreement with one of the kingdoms, the king of that kingdom has set a condition that one of the crew members must marry his daughter

King: "I want one of you to marry my third daughter, Evelyna... after that I will agree to cooperation between my kingdom and straw hat pirates"

Luffy: "Okay..."

Sanji: "How about with me...!"

Zoro: "This perverted chef is thinking about marrying the princess?"

Sanji: "shut up moss head!"

King: "I agree"