In my story's setting, the world is divided by three continents. Each of them have their own respective curses; Continent A - People born here only live until they are 18 As a result, the population is very young and they have to borrow more mature people from other continents to act as their governing body. Consists of 4 cities. Continent B - People born here would permanently turn into monsters when their physical condition is worse enough. (Injury /Illness) Everyone born in this continent is feared by the rest of the world. People here who turn into monsters may end up killing and devouring their own family and friends. Due to this chaos, the government here has completely collapsed. Consists of 4 villages. Continent C - People born here would be wiped out from everyone's memories when they die Due to the nature of this curse, no one is actually aware that this curse exists. So they tend to act like elitists who are unaffected by the misfortunes of the rest of the world. It's run by a powerful kingdom which consists of 21 districts. Majority of my story's antagonists reside here. One of my main characters was born here, theorizes that they do have a curse and spends a big chunk of the story looking for answers. My 3 main characters come from each of these continents. They help each other grow and conquer their fears brought about by their fate. My question is, how can I make this world feel natural and not messy? At first glance it almost feels like it's three worlds in one. How can I make these 3 continents work well with each other?