Sun Buster:The Under king

In a world where 2 kings rule the entire world which contains 12 continents & 4 oceans, how people are treated differs base on which continent you are from. From continent 7-12 are considered workers/tools. A 19 year old young man named cloudy vengeance nicknamed Dentist promised to kill the under king to bring order to the world

Prompt: Meeting more allies...
Theme(s):#Action#Adventure#Fantasy#Shounen
My Themes:#Injustice #Friendship#Changing the world
English is not my first language so if you find any mistake please correct me.