Mervyn customs. Upon inquiry, the mysterious scholar of Final Fantasy 14 Wiki was warmly welcomed as a knowledgeable person when he crossed the ocean. One of the most famous is Ikuku. About 500 years ago, he came to this seaside city, and was soon promoted to the advisor of Governor Melvan. Ikuku helped establish Mervyn Customs. The lower floor of Limsalominsa in the west of Turano is where Mervan Customs is located.