This is a tripartite world, divided into three continents: east, west and south. The east continent is engaged in farming and prosperous, while the west continent is engaged in business and prosperous. The southern continent is a country of thousands of islands, with a developed fish industry. This story tells the story of how a humble little slave fell in love with someone he shouldn't love, was betrayed, hurt, and finally worked hard＞－＜HEＥ